Ethylene glycol 40% solution is a ready-to-use ethylene glycol-based heat transfer fluid used in heating, air conditioning, and industrial refrigeration systems. Its optimal concentration ensures reliable freeze protection, stable heat transfer, and long-lasting durability of utility systems.

40% ethylene glycol solution is available for purchase at Novohim’s warehouse in Kharkiv or with delivery throughout Ukraine.

The primary use of 40% ethylene glycol solution is as a heat transfer fluid for heating systems.

What is 40% ethylene glycol solution?

Ethylene glycol 40% is an aqueous ethylene glycol solution with an optimal concentration that requires no additional dilution before use. The product is ready to be added to the system and ensures stable operation at low temperatures.

Main functions:

• Freeze protection
• Heat energy transfer
• Stable water circulation in the system
• Equipment protection from corrosion
• Prevention of deposit formation

40% ethylene glycol solution for heating as a coolant

Its advantages undoubtedly include protection against corrosion and pressure surges in the system. It can be used in closed single-circuit heating systems.

Advantages of 40% ethylene glycol solution

Using 40% ethylene glycol provides significant advantages:

• effective method of protecting the system from freezing
• stable operation at low temperatures
• improved thermal conductivity
• reduced risk of damage to pipes and equipment
• long service life
• ready to use without additional mixing
• saving time and resources

Why use a 40% ethylene glycol solution?

A 40% concentration is optimal for most climatic conditions in Ukraine because:

•  provides effective freeze protection
•  maintains good fluidity
•  maintains stable circulation in the system
•  does not place excessive strain on pumping equipment

The cost of ethylene glycol solution fully justifies its purchase and its properties. It is cheaper than propylene glycol solution, as it has limitations in its use (it is not recommended for use in open heating systems).
It also has an advantage over water. Water only reduces the temperature to 1.1°C, which is ten times less than ethylene glycol.

How to use ethylene glycol solution

1. Check the system for leaks
2. Flush the circuit before filling (if necessary)
3. Fill the system with the prepared solution
4. Bleed air from the system
5. Start the equipment

More information about propylene glycol solution, as well as the relationship between freezing point and density, can be found at the link

More information

You can purchase ethylene glycol concentrate from our warehouse in Kharkiv and with delivery throughout Ukraine.

Our company partners with many transport companies and carriers throughout Ukraine. You receive your order on time, and we guarantee reliability and quality. Call and order from a trusted supplier.

The Ethylene glycol solution 40% message appeared first on Novohim.

What Is This Product

A 40% ethylene glycol solution consists of 40 parts by weight of ethylene glycol and 60 parts by weight of distilled water.
For example, 100 kg of finished solution contains 40 kg of ethylene glycol and 60 kg of distilled water.
The product is supplied already prepared, so there is no need to mix concentrated ethylene glycol with water on site to obtain a 40% solution.
However, this product is not a formulated inhibited heat transfer fluid.
It contains no:

• corrosion inhibitors;
• antifoaming agents;
• stabilizing additives;
• other functional components typically used in formulated heat transfer fluids.

Applications of 40% Ethylene Glycol Solution

The product can be used:

• as a process raw material;
• as a component in industrial production;
• for further manufacture of other products;
• for preparing proprietary formulations;
• in process equipment that permits the use of an uninhibited aqueous ethylene glycol solution;
• in processes requiring ethylene glycol at a specified concentration.

Suitability for specific equipment depends on its design, materials of construction, and the equipment manufacturer’s requirements.

Key Specifications

* The temperature is given as a reference value for an aqueous ethylene glycol solution containing 40 wt.% ethylene glycol. For a specific batch, use the product documentation.

Crystallization Onset Temperature

For an aqueous ethylene glycol solution containing 40 wt.%, the reference crystallization onset temperature is approximately −24 °C.
Crystallization onset does not mean that the entire volume freezes solid immediately.

A detailed description of how the crystallisation onset temperature varies with concentration can be found in the article ‘Ethylene glycol solution’ in the Reference Centre

Other Concentrations Available

LLC “AO Khimprom” manufactures aqueous ethylene glycol solutions in different concentrations.
This allows customers to order the required ratio of ethylene glycol to distilled water without preparing large volumes of solution themselves.
When ordering, specify:

• required concentration;
• required quantity;
• preferred packaging.

Products in this category are manufactured without a functional additive package.

Ethylene Glycol Solution vs. FREEZLIGHT®

These are different products.
Ethylene Glycol Solution
Composition:
ethylene glycol + distilled water.
No functional additives are included.
The product is intended primarily for industrial processes, manufacturing, and applications where an aqueous ethylene glycol solution of a specified concentration is required.
FREEZLIGHT® Heat Transfer Fluid
FREEZLIGHT® contains an aqueous ethylene glycol base combined with a specially selected functional additive package.
If a circulation system requires corrosion protection and other functional properties, choose a formulated heat transfer fluid rather than a plain ethylene glycol solution.
The Novohim range includes FREEZLIGHT® ethylene glycol-based heat transfer fluids for different temperature conditions.

When a Solution Without Additives Is Appropriate

40% Ethylene Glycol Solution is suitable when:

• a concentration of 40 wt.% is required;
• additives are not required by the process;
• the product is used as a raw material;
• the customer formulates the final product independently;
• the equipment permits the use of an uninhibited aqueous ethylene glycol solution;
• there is no need for a formulated heat transfer fluid with a functional additive package.

When to Choose a Formulated Heat Transfer Fluid

A formulated FREEZLIGHT® heat transfer fluid is more appropriate when a ready-to-use working fluid is required for a heating, cooling, or heat transfer system that requires a functional additive package.
Selection should take into account the operating temperature, system design, and equipment manufacturer’s requirements.

You can find out more about propylene glycol solutions, as well as the relationship between freezing point and density, by following the link

Limitations

Ethylene glycol is toxic. Product selection must therefore take into account the risk of contact with people, animals, food products, or potable water.
40% Ethylene Glycol Solution should not automatically be used:

• as a replacement for a formulated inhibited heat transfer fluid;
• in systems requiring corrosion inhibitors;
• where there is a risk of contamination of potable water or food products;
• as automotive antifreeze;
• in applications requiring specific approvals;
• without checking the equipment manufacturer’s requirements.

The properties of concentrated ethylene glycol should not be automatically attributed to a 40% aqueous solution.

Material Compatibility and Equipment Use

Before use, check the equipment manufacturer’s requirements for the working fluid.
Consider the materials used in:

• piping;
• heat exchangers;
• pumps;
• seals;
• gaskets;
• membranes;
• soldered joints;
• sealants.

Because the product contains no corrosion inhibitors, it should not be described as providing the corrosion protection of a formulated inhibited heat transfer fluid.

Preparation for Use

If the solution is used as a working fluid in a process circuit:

1. Confirm that an aqueous ethylene glycol solution without additives is permitted.
2. Remove the previous working fluid.
3. Clean the system if necessary.
4. Remove as much residual water as possible if maintaining the specified concentration is important.
5. Check the system for leaks.
6. Fill the system with the prepared solution.
7. Ensure proper circulation.

Residual water in the system reduces the actual ethylene glycol concentration and changes the crystallization onset temperature.

Does the 40% Solution Need to Be Diluted

If a concentration of 40 wt.% is required, no additional dilution is necessary.
Adding water reduces the ethylene glycol concentration and changes the properties of the solution.
If another concentration is required, a ready-made solution with the specified ratio of ethylene glycol to distilled water can be manufactured to order.

Storage and Safety

Ethylene glycol is toxic if swallowed.
Store the product in tightly closed, clearly labelled containers, separately from food products and in areas inaccessible to unauthorized persons.
Follow the Safety Data Sheet and use appropriate personal protective equipment according to the working conditions.

Frequently Asked Questions

What does the 40% ethylene glycol solution contain?
Ethylene glycol and distilled water.
The ethylene glycol concentration is 40 wt.%.
What is the crystallization onset temperature?
For an aqueous solution containing 40 wt.% ethylene glycol, the reference value is approximately −24 °C.
Does the product contain corrosion inhibitors?
No. It contains no corrosion inhibitors or other functional additives.
Is this a ready-to-use heat transfer fluid for a heating system?
It is a prepared aqueous ethylene glycol solution of a specified concentration, but it is not a formulated inhibited heat transfer fluid.
If the system requires a functional additive package, choose the appropriate formulated heat transfer fluid.
Can I order another concentration?
Yes. Aqueous ethylene glycol solutions of other concentrations can be manufactured to order.
Are additives included in solutions of other concentrations?
No. When an aqueous ethylene glycol solution is ordered, it consists of ethylene glycol and distilled water without a functional additive package.

Novohim offers a ready-made 40 wt.% ethylene glycol solution in distilled water without functional additives.
Other concentrations can also be manufactured to order.

If you need to prepare solutions independently, concentrated ethylene glycol is also available.
If a ready-to-use working fluid with a functional additive package is required, choose the appropriate FREEZLIGHT® ethylene glycol-based heat transfer fluid.

The 40% Ethylene Glycol Solution message appeared first on Novohim.

FREEZLIGHT Frost −60 °C is a working fluid used to transfer cooling capacity in the circuit of a refrigeration system.
The coolant circulates between the refrigeration plant and the cooling loads, such as freezer rooms, process equipment, heat exchangers, cooled vessels or other system components.
The product is not the primary refrigerant of a compression refrigeration system. It operates in a separate circulation loop and transfers thermal energy from the cooled equipment to the refrigeration unit.
Aqueous potassium formate solutions are used in low-temperature systems as an alternative to glycol-based coolants. However, density, viscosity, specific heat capacity, thermal conductivity and hydraulic resistance depend on concentration and temperature.
Pump, pipework and heat-exchanger calculations must therefore use the technical data for FREEZLIGHT Frost −60 °C itself, not reference values for pure potassium formate or another potassium-formate coolant.

What the −60 °C designation means

The −60 °C designation identifies the low-temperature grade of FREEZLIGHT Frost.
Before designing or filling the system, confirm which parameter this value represents:

• crystallization onset temperature;
• freezing point determined by a specified method;
• freeze-protection limit;
• loss-of-flow temperature;
• commercial product grade.

The −60 °C value must not automatically be treated as the recommended continuous operating temperature.
Correct selection requires the following parameters:

• minimum coolant temperature in the circuit;
• evaporator temperature;
• start-up temperature after an extended shutdown;
• maximum acceptable viscosity for the circulation pump;
• hydraulic resistance of the pipework;
• risk of localized overcooling;
• required design temperature margin.

The lowest temperature in the circuit should not coincide with the coolant’s limiting value without the temperature margin specified by the system design.

Main characteristics

Read about which heat transfer fluid to choose at this link.

Follow the link and select a heat transfer fluid based on:

propylene glycol

glycerine

ethylene glycol

Why potassium formate is selected for low-temperature cooling

Potassium-formate coolants are used in industrial systems that require low-temperature operation and circulation of cooling capacity through a secondary loop. Key features of FREEZLIGHT Frost −60 °C:
• potassium formate mass fraction of at least 50%;
• low-temperature grade of −60 °C;
• designed for closed circuits;
• functional corrosion-inhibitor package;
• suitable for industrial circuits with substantial fluid volumes;
• intended for duties where the temperature margin of standard glycol grades may be insufficient;
• can be compared with ethylene-glycol and propylene-glycol coolants by temperature, system type and operating conditions.

Use the product-specific technical documentation for exact thermophysical properties. Properties of pure potassium formate or another manufacturer’s product must not be attributed to the finished

FREEZLIGHT Frost formulation.

When FREEZLIGHT Frost −60 °C may be the right choice
Consider this product when:

• the system operates at low temperatures;
• a closed refrigeration circuit is used;
• cooling must be distributed to one or more loads;
• the equipment permits aqueous potassium formate solutions;
• the pumps are sized for the density and viscosity of the selected coolant;
• pipework, heat-exchanger and seal materials have confirmed compatibility;
• filtration, air removal and leak monitoring are provided;
• the condition and concentration of the working fluid can be checked periodically;
• the temperature margin of −20 °C or −32 °C glycol grades is insufficient.

FREEZLIGHT Frost −60 °C can be considered for a new installation or as a replacement for an existing coolant after compatibility has been checked and the circuit has been prepared correctly.

Applications

The coolant may be used in:

• industrial refrigeration installations;
• freezer and low-temperature rooms;
• cold-storage warehouses;
• logistics and distribution centres;
• process cooling systems;
• chiller circuits;
• rapid-freezing installations;
• process heat exchangers;
• cooling systems for production equipment;
• ice-rink systems;
• other closed cooling circuits.

At food and pharmaceutical facilities, the product should be considered only for closed indirect circuits, provided that this use is supported by the product documentation and contact with raw materials or finished products is excluded.
The presence of a refrigeration circuit at a food-processing facility does not by itself mean that the fluid is approved for direct or incidental food contact.

When another coolant should be selected

FREEZLIGHT Frost −60 °C may be excessive for systems with a moderate temperature profile.
Consider another product when:
• the minimum system temperature does not require the −60 °C grade;
• the product is required for a conventional heating system;
• the equipment is approved only for ethylene glycol or propylene glycol;
• the pump or heat-exchanger manufacturer does not permit potassium-formate solutions;
• the system contains materials with unconfirmed compatibility;
• the circuit is open or is continuously exposed to atmospheric air;
• an automotive antifreeze is required;
• the fluid is intended to replace the primary refrigerant in a compression system;
• a confirmed high-temperature operating mode is required.

For sealed technical systems with a less demanding temperature profile, consider FREEZLIGHT −32 °C based on ethylene glycol.
For systems with stricter toxicological-profile requirements, consider FREEZLIGHT −32 °C based on propylene glycol.
Do not select a temperature grade on the principle that lower is always better. Base the decision on the actual minimum temperature, pump characteristics and required design margin.

Material compatibility

Before filling, verify compatibility with every material in the system, not only with the pipework.
Check:
• heat-exchanger metals;
• pipe materials;
• solders and flux residues;
• welded joints;
• pump impellers and shaft seals;
• gaskets;
• membranes;
• control and shut-off valves;
• tank linings;
• thread sealants;
• flexible hoses;
• filter elements.

Universal compatibility with all grades of steel, aluminium, copper, rubber or polymers must not be claimed.
The following require particular verification:

• galvanized surfaces;
• zinc components;
• aluminium alloys;
• soft solders;
• elastomer seals;
• internal tank coatings;
• mixed-metal systems.

The final decision should be based on the technical documentation for FREEZLIGHT Frost −60 °C and the recommendations of the equipment manufacturers.

Learn more about replacing the coolant and caring for your heating system at the link.

How to select a coolant independently

Determine the main system parameters before ordering.
1. Minimum temperature
Use the actual minimum coolant temperature, not only the air temperature in the room, chamber or facility.
2. Evaporator temperature
The temperature in individual parts of the circuit may be lower than the average bulk-fluid temperature.
3. Maximum temperature
Allow for defrosting, cleaning, shutdown conditions and any temporary rise in temperature.
4. System volume
The system volume is needed to calculate the required quantity and select an appropriate package size.
5. Equipment type
Check the requirements of the chiller, heat exchanger, pump, valves and other equipment manufacturers.
6. System materials
Identify pipe, heat-exchanger, seal, gasket, solder and internal-coating materials.
7. Previous working fluid
Residues of glycol, chloride brine or another coolant may be incompatible with a potassium-formate product.
8. Toxicological-profile requirements

Food, pharmaceutical, residential or open-site applications may be subject to additional restrictions.

The Novohim Reference Centre should be used to review:

• differences between potassium-formate and glycol-based coolants;
• selection of the appropriate temperature grade;
• the effect of concentration on temperature and viscosity;
• circulation-pump requirements;
• material compatibility;
• system preparation;
• coolant replacement and condition monitoring.

After reviewing these materials, select the likely product type and provide the system parameters to the manager for verification of the preliminary choice.

System preparation

Correct circuit preparation affects coolant stability and equipment condition.
Before filling:

1. Check that the product matches the design temperature range.
2. Confirm that the equipment manufacturer permits potassium-formate secondary coolants.
3. Remove the previous working fluid completely.
4. Flush the system to remove corrosion products, sediment and contamination.
5. Remove as much flushing water as possible.
6. Pressure-test and inspect the pipework and heat exchangers for leaks.
7. Check seal, gasket and thread-sealant materials.
8. Clean or replace the filters.
9. Verify the circulation pump operating point.
10. Check the condition of valves and monitoring devices.
11. Provide a suitable sampling point for testing after filling.

Residues of ethylene glycol, propylene glycol, glycerol, chloride brine or another working fluid may change the properties of the new coolant and cause additive incompatibility.
A system with active corrosion, heavy sludge or deposits should be cleaned before it is filled with new coolant.

Filling and commissioning

Fill the system in accordance with the design documentation and the equipment manufacturer’s instructions.
Recommended sequence:

1. Introduce the coolant from the lowest filling point.
2. Vent heat exchangers and high points in sequence.
3. Do not allow the circulation pump to run dry.
4. Establish full circulation after filling.
5. Inspect all joints for leaks.
6. Check system pressure in cold and operating conditions.
7. Inspect the filters after the initial circulation period.
8. Take a representative sample after complete mixing.
9. Record the initial control values in the operating log.

Do not use an ethylene-glycol or propylene-glycol refractometer scale automatically for concentration control.
Use a calibration table or analytical method intended for aqueous potassium formate solutions and, where available, for this specific product.

Dilution

The potassium formate mass fraction in FREEZLIGHT Frost −60 °C is at least 50%.
The supply form must be confirmed in the technical documentation.
If FREEZLIGHT Frost −60 °C is supplied ready to use, additional dilution without a technical calculation is not recommended.
Adding water changes:

• potassium formate concentration;
• crystallization or freezing behaviour;
• density;
• viscosity;
• thermophysical properties;
• concentration of corrosion inhibitors;
• the hydraulic operating conditions of the system.

If the product is supplied as a concentrate, the manufacturer should provide a dilution table, water-quality requirements and the minimum permitted concentration of the functional additive package.
Dilution without a product-specific table does not provide a reliable basis for determining the final coolant properties.

Mixing with other products

Do not mix FREEZLIGHT Frost −60 °C without prior compatibility testing with:

• ethylene-glycol coolants;
• propylene-glycol coolants;
• glycerol-based fluids;
• chloride brines;
• automotive antifreezes;
• products of unknown composition;
• separately purchased corrosion inhibitors;
• leak-sealing additives.

Even coolants based on the same salt may use different corrosion inhibitors, buffers, stabilizers and antifoam components.
Possible consequences of incompatibility include:

• cloudiness;
• precipitate formation;
• pH change;
• foaming;
• blocked filters or narrow passages;
• accelerated depletion of the additive package;
• reduced corrosion protection.

When changing from another product, drain and flush the system as thoroughly as possible.

Monitoring during operation

During operation, monitor:

• minimum and maximum coolant temperature;
• circuit pressure;
• stable circulation;
• pressure drop across filters;
• pump operation;
• joint tightness and leakage;
• fluid appearance;
• formation of sediment or crystals;
• the quantity of added water or coolant;
• potassium formate concentration;
• control parameters specified by the manufacturer.

Carry out an unscheduled check after:

• a significant leak;
• addition of water;
• heat-exchanger repair;
• pump replacement;
• contact with another working fluid;
• an extended shutdown;
• operation outside the permitted temperature range;
• the appearance of sediment, cloudiness or unstable circulation.

Use the same product at the same concentration for topping up whenever possible.
If the coolant level falls repeatedly, locate and correct the leak before adding more fluid.

Main limitations

FREEZLIGHT Frost −60 °C should not be used:

• as the primary refrigerant in a compression refrigeration system;
• as an automotive antifreeze without the appropriate approval;
• in open circuits unless expressly permitted by the manufacturer;
• for direct contact with food products;
• after uncontrolled dilution with water;
• in systems containing materials with unconfirmed compatibility;
• together with heat transfer fluids or coolants of unknown composition;
• in a contaminated or actively corroding system without prior cleaning;
• outside the confirmed operating temperature range;
• in a circuit not designed for the density and viscosity of the potassium-formate solution.

The coolant does not replace automatic controls, pressure monitoring, loss-of-flow protection or emergency alarms.

Storage and safety

Store the product in closed, clearly labelled containers protected from contamination, precipitation and ingress of other liquids.
During handling:

• use eye and hand protection specified in the safety data sheet;
• avoid splashing;
• prevent contact with food products;
• collect spills in a separate labelled container;
• do not reuse empty containers for water or food materials;
• do not discharge the product to soil or drains;
• dispose of used fluid in accordance with applicable requirements.

Storage temperature, shelf life, personal protective equipment and first-aid measures must be stated according to the FREEZLIGHT Frost −60 °C safety data sheet.
Do not use claims such as “absolutely safe”, “non-toxic” or “environmentally safe” without supporting product-specific documentation.

FAQ

What is FREEZLIGHT Frost −60 °C used for?

It is used to transfer cooling capacity in closed secondary circuits of industrial and process refrigeration systems.

What is the potassium formate concentration?

The product contains at least 50% potassium formate by mass.

Does −60 °C mean the continuous operating temperature?

No. It is the product’s temperature grade. The physical meaning of the value and the permitted operating range must be confirmed in the technical documentation.

Is the product ready to use?

The supply form must be confirmed. Until then, the product should not be described as either a ready-to-use fluid or a concentrate.

Can it be diluted with water?

Only according to a confirmed dilution table. Adding water changes concentration, temperature characteristics and the concentration of functional additives.

Can FREEZLIGHT Frost be mixed with a glycol coolant?

Not without prior compatibility testing. The additive packages and physicochemical properties may be incompatible.

Is the coolant suitable for a food-processing facility?

It may be considered for a closed indirect refrigeration circuit. The specific use must be supported by documentation and an assessment of leakage risk.

Is the product compatible with aluminium or galvanized steel?

Compatibility must be confirmed for the specific alloy, temperature and equipment design.

Can FREEZLIGHT Frost be used instead of refrigerant gas?

No. FREEZLIGHT Frost is a secondary coolant, not the primary refrigerant in a compression refrigeration system.

How is coolant concentration checked?

Use a method or calibration table intended for potassium formate. An ethylene-glycol or propylene-glycol refractometer scale may give an incorrect result.

Follow the link and view all products in this category.

The FREEZLIGHT® Frost −60 °C Potassium Formate Low-Temperature Coolant message appeared first on Novohim.

What Is This Product?

40% Propylene Glycol Solution consists of propylene glycol and distilled water in a specified ratio.
The product is supplied as a prepared solution, eliminating the need to mix propylene glycol with water on site when a large volume of a specified concentration is required.
However, this product is not a formulated inhibited heat transfer fluid.
It contains no:

• corrosion inhibitors;
• antifoaming agents;
• stabilizing additives;
• other functional components typically used in formulated heat transfer fluids.

Applications of 40% Propylene Glycol Solution

The product can be used:

• as a process raw material;
• as a component in industrial processes;
• for further manufacturing of other products;
• for preparing proprietary formulations;
• in process equipment that permits the use of an uninhibited aqueous propylene glycol solution;
• in processes requiring propylene glycol at a specified concentration.

Suitability for specific equipment depends on its design, materials of construction, and the equipment manufacturer’s requirements.

More about propylene glycol solution, as well as the freezing point and density correspondence, see the following link

More information

Other Concentrations Available

LLC “AO Khimprom” manufactures aqueous propylene glycol solutions in different concentrations.
This is convenient when a process requires a ratio of propylene glycol to distilled water other than the standard 40% concentration.
When ordering, specify:

• required concentration;
• required quantity;
• preferred packaging.

Products in this category are manufactured without a functional additive package.
For more information about the relationship between propylene glycol concentration, crystallization onset temperature, and other properties, see the Novohim Reference Center article “Propylene Glycol Solution”.

Propylene Glycol Solution vs. FREEZLIGHT®

These products differ in both composition and intended use.
Propylene Glycol Solution
Composition:
propylene glycol + distilled water.
No functional additives are included.
The product is intended primarily for industrial processes, manufacturing, and other applications requiring an aqueous propylene glycol solution of a specified concentration.
FREEZLIGHT® Heat Transfer Fluid
FREEZLIGHT® contains an aqueous propylene glycol base combined with a specially selected functional additive package.
These formulated heat transfer fluids are intended for long-term circulation in heating, cooling, and heat transfer systems according to the specifications of the particular product grade.
If the system requires corrosion protection and other functional properties, a formulated FREEZLIGHT® heat transfer fluid should be used instead of a plain propylene glycol solution.

When to Choose a Solution Without Additives

40% Propylene Glycol Solution is appropriate when:

• a specific propylene glycol concentration is required;
• additives are not required by the process;
• the product is used as a raw material;
• the customer formulates the final product independently;
• the equipment permits the use of an uninhibited aqueous propylene glycol solution;
• there is no need for a formulated heat transfer fluid with a functional additive package.

When to Choose a Formulated Heat Transfer Fluid

FREEZLIGHT® is the more appropriate option when a ready-to-use working fluid is required for:

• heating systems;
• cooling systems;
• heat transfer systems;
• heat pumps;
• other circulation systems requiring a functional additive package.

The Novohim range includes FREEZLIGHT® propylene glycol-based heat transfer fluids for different temperature conditions, including products with crystallization onset temperatures of −20 °C and −32 °C.

Limitations

40% Propylene Glycol Solution should not automatically be used:

• as a direct replacement for a formulated inhibited heat transfer fluid;
• in systems where the equipment manufacturer requires a fluid containing corrosion inhibitors;
• in mixed-metal systems without assessing corrosion risks;
• as an automotive antifreeze;
• in applications requiring specific approvals;
• as a food-grade or pharmaceutical product solely because it contains propylene glycol.

The properties of pure propylene glycol should not be automatically attributed to a 40% aqueous solution without considering its actual concentration.

Material Compatibility and Equipment Use

Before using the solution in a circulation or process system, check the equipment manufacturer’s requirements.
Consider the materials used in:

• piping;
• heat exchangers;
• pumps;
• seals;
• gaskets;
• membranes;
• soldered joints;
• sealants.

Because this product contains no corrosion inhibitors, it should not be described as providing corrosion protection for all metals in a system.

Preparation for Use

If the solution is used as a working fluid in a process circuit:

1. Confirm that the solution is suitable for the equipment.
2. Remove the previous working fluid.
3. Clean the system of contamination and deposits.
4. Remove as much residual water as possible if maintaining the specified concentration is important.
5. Check the system for leaks.
6. Fill the system with the prepared solution.
7. Ensure proper circulation and uniform mixing.

Residual water in the system will reduce the actual propylene glycol concentration.

Does the 40% Solution Need to Be Diluted

If a 40% concentration is required, no further dilution is necessary.
Adding water reduces the propylene glycol concentration and changes the physical properties of the solution.
If another concentration is required, a solution with the specified ratio of propylene glycol to distilled water can be manufactured to order.

You can buy propylene glycol concentrate, as well as propylene glycol solution from the warehouse in Kharkiv and with delivery throughout Ukraine.

Storage and Safety

Store the product in tightly closed, properly labelled containers and protect it from contamination with foreign substances.
Follow the Safety Data Sheet and standard procedures for handling industrial chemical products.
Claims such as “absolutely safe”, “harmless”, or “100% environmentally friendly” should not be used without appropriate documented substantiation.

Frequently Asked Questions

What does the 40% propylene glycol solution contain?
Propylene glycol and distilled water.
Does the product contain corrosion inhibitors?
No. It contains no corrosion inhibitors or other functional additives.
Is this a ready-to-use heat transfer fluid for a heating system?
It is a prepared aqueous propylene glycol solution of a specified concentration, but it is not a formulated inhibited heat transfer fluid.
If the system requires a functional additive package, choose a FREEZLIGHT® heat transfer fluid.
Can I order a different concentration?
Yes. Aqueous propylene glycol solutions of other concentrations can be manufactured to order.
Are additives included in solutions of other concentrations?
No. When an aqueous propylene glycol solution is ordered, it consists of propylene glycol and distilled water without a functional additive package.
What determines the crystallization onset temperature?
Primarily the propylene glycol concentration.
See the Novohim Reference Center article “Propylene Glycol Solution” for the concentration and crystallization onset temperature table.
Can this product be used in a heating system?
Only if the system design and equipment manufacturer permit the use of an aqueous propylene glycol solution without functional additives.
Where a corrosion inhibitor package is required, use a formulated heat transfer fluid.

The Propyleneglycol solution 40% message appeared first on Novohim.

In construction

You can buy Separen in Kharkiv in our online store of chemicals Novohim.

Advantages of using Separen:

1. Applicable for the lubrication of all types of formwork in the production of products from concrete, plaster and other construction mixtures
2. SEPAREN is environmentally friendly, does not change the color of concrete and is approved for use with white concrete.
3. It is economical, for one application of a thin layer of SEPAREN it is allowed up to 3 exposures.

IMPORTANT!!! It is recommended to use working solutions of Separen with water as in too viscous state means loses its effective pouring properties, worsens concrete surface and form cleanness.

Dilute by experience until a layer of desired density is obtained.

Add concrete to the mold only after the applied layer has dried and a film of Separene has formed.

Instructions for use of Separen.

Separen can be applied with a roller, brush or spray gun. Concrete should be added to the mould only after the applied layer has dried and a film of Separen has formed.

The release agent can be used as a concentrate or aqueous solution. Depending on the type of moulds and working conditions, it can be diluted with water in the ratio of 1:1 or up to 1:3, as decided by the technologist. After adding water, the solution should be thoroughly mixed.

IMPORTANT:
The amount of water is selected experimentally, taking into account temperature, humidity and peculiarities of the formwork material.

Application:

1. Apply to a clean, dry formwork surface in a thin, even layer using a brush, roller or sprayer.
2. Allow to stand for 30-60 seconds until wet sheen disappears.
3. Be sure to: wipe the surface with a damp sponge or soft cloth. This removes excess and polishes the thin layer of wax phase.
4. Concrete can be laid immediately after drying.

Result:
After drying, a thin, glossy, water-repellent film is formed which:
– will not be washed off by rain,
– does not give white stains on the concrete,
– does not affect the surface quality of the product.

Follow this link and see all products from the category Construction Chemicals

You can buy Separen from the warehouse of Novohim Company in Kharkiv or with delivery in Kyiv, Dnipro, Zaporizhzhia, Poltava, Sumy, Zhytomyr, Vinnytsia and all over Ukraine.

The Separen message appeared first on Novohim.

FREEZLIGHT® −20 °C is a ready-to-use propylene glycol heat transfer fluid for indoor heating systems, radiators, hydronic underfloor heating, gas boilers, electric boilers, and solid-fuel boilers.

The crystallization onset temperature is −20 °C. The fluid is formulated with propylene glycol and demineralized water and contains a package of corrosion-inhibiting, stabilising, and antifoam additives. It contains no nitrites or amines.

FREEZLIGHT® −20 °C is recommended for systems in which pipelines, radiators, and heat exchangers are located inside the building and are not directly exposed to frost or wind. For outdoor sections, rooftop heat exchangers, solar thermal collectors, unheated rooms, or systems with an unknown amount of residual water, we recommend FREEZLIGHT® −32 °C with a greater low-temperature safety margin.

Key Specifications of FREEZLIGHT® −20 °C

What Is FREEZLIGHT® −20 °C

FREEZLIGHT® −20 °C is a ready-to-use non-freezing fluid designed to transfer heat and protect the system from damage during an emergency temperature drop.
Unlike water, the heat transfer fluid does not freeze immediately at 0 °C. As it cools to the specified temperature, crystals gradually begin to form. With further cooling, the amount of crystals increases, the fluid thickens, and its mobility decreases.
Therefore, the −20 °C rating indicates the temperature at the onset of crystallization. It is not the recommended continuous operating temperature and does not guarantee normal circulation at an ambient temperature of −20 °C.
For the system to remain operational, the temperature of its coldest section must stay above the crystallization onset temperature of the heat transfer fluid.

When FREEZLIGHT® −20 °C Is the Right Choice

FREEZLIGHT® −20 °C is recommended when:

• all pipelines are located inside the building;
• radiators and heat exchangers do not extend outdoors;
• there is no equipment installed on the roof or facade;
• pipelines do not pass through cold attics, canopies, or unheated rooms;
• the building is heated continuously or regularly;
• as much water as possible has been removed after flushing;
• the actual temperature of the coldest section of the system does not approach −20 °C;
• no additional safety margin is required for a prolonged emergency heating shutdown.

FREEZLIGHT® −20 °C is suitable for private homes, apartments with independent heating, offices, shops, workshops, administrative buildings, and production facilities where the entire heating system is located within the protected building envelope.

When We Recommend FREEZLIGHT® −32 °C

Choosing a heat transfer fluid only by the minimum temperature shown in the weather forecast is not correct. The design of the system and the operating conditions of its coldest component must also be considered. FREEZLIGHT® −32 °C propylene glycol heat transfer fluid is recommended when:

• part of the pipeline is located outside the building;
• a heat exchanger or cooling fins are installed on the roof;
• the system passes through an unheated attic or technical room;
• the equipment is exposed to strong wind;
• the building may remain without heating for a prolonged period;
• extended power outages are possible;
• the facility is used seasonally;
• a significant amount of water may remain in the system after flushing;
• the actual operating conditions cannot be predicted accurately;
• an additional low-temperature safety margin is required.

FREEZLIGHT® −32 °C is selected not because it is of higher quality than FREEZLIGHT® −20 °C, but because a particular system requires greater protection against cooling.

Practical Experience of Novohim

In one multi-storey building heating system, part of the heat-exchange equipment with cooling fins was installed on the roof.
During a period of frost, the air temperature was close to −20 °C. At the same time, there were strong winds, high humidity, and intensive cooling of the exposed heat-exchange surfaces.
The temperature on the roof and the actual operating conditions of the equipment differed from the general weather forecast for the city. Strong wind accelerated heat loss from exposed metal surfaces, especially after circulation was reduced or stopped.
In the coldest sections, the heat transfer fluid with a crystallization onset temperature of −20 °C began to crystallize and lost the mobility required for circulation.
The pipelines and heat exchangers remained intact, but normal circulation stopped and the heating system temporarily ceased to operate.
This case demonstrates that protecting pipes from mechanical damage and maintaining system operation are two different objectives. A fluid that has begun to crystallize may not rupture the equipment, but the circulation pump may no longer be able to move the thickened fluid containing crystals.
For this reason, Novohim recommends FREEZLIGHT® −32 °C for systems with outdoor heat exchangers, rooftop equipment, or exposed pipelines.

Residual Water Changes the Crystallization Temperature

FREEZLIGHT® −20 °C is supplied at a ready-to-use concentration and does not require dilution.
However, after flushing, pressure testing, or previous operation with water, some water may remain:

• in low sections of pipelines;
• in radiators;
• in heat exchangers;
• in underfloor heating circuits;
• in manifolds;
• in pumps;
• in horizontal pipe sections;
• in buffer tanks;
• in areas where complete drainage is not possible.

After the ready-to-use heat transfer fluid is filled into the system, the residual water mixes with it and reduces the propylene glycol concentration. As a result, the actual crystallization onset temperature becomes higher than the specified −20 °C.
For example, if the total system volume is 1,000 litres but 100 litres of water remain after flushing, only about 900 litres of ready-to-use heat transfer fluid can be added. The proportion of the finished product in the final mixture will be reduced by approximately 10%.
The new crystallization onset temperature cannot be determined by simply subtracting a number of degrees. The relationship between propylene glycol concentration and crystallization temperature is non-linear.
After filling the system, you should:

1. ensure full circulation and thorough mixing of the heat transfer fluid;
2. take a sample from the operating circuit;
3. check the concentration using a refractometer calibrated for aqueous propylene glycol solutions;
4. adjust the composition if necessary;
5. repeat the measurement after the fluid has been fully mixed.

If the approximate volume of residual water is unknown or the concentration cannot be measured, it is advisable to select FREEZLIGHT® −32 °C with a greater low-temperature safety margin.

Applications of FREEZLIGHT® −20 °C

The heat transfer fluid can be used in:

• indoor radiator heating systems;
• hydronic underfloor heating circuits;
• gas boilers;
• electric boilers with heating elements;
• solid-fuel and pellet boilers;
• independent heated towel rail circuits;
• indoor cooling systems;
• indoor process heat-transfer circuits.

Use is permitted provided that the manufacturer of the boiler, pump, heat exchanger, and other equipment allows aqueous propylene glycol heat transfer fluids.

Gas and Combination Boilers

In gas boilers, the product must be used in accordance with the equipment manufacturer’s requirements.
In a combination boiler, the heat transfer fluid must circulate only in the heating circuit. It must not enter the domestic or drinking water circuit.

Solid-Fuel Boilers

Use in systems with solid-fuel and pellet boilers is permitted only when properly designed overheating protection is installed.
Prolonged local overheating or boiling accelerates propylene glycol ageing, depletes the additive package, and shortens the service life of the heat transfer fluid.

Electrode Boilers

In electrode boilers, heating depends on the electrical conductivity of the working fluid.
FREEZLIGHT® −20 °C may be used in such equipment only with the boiler manufacturer’s explicit approval and after confirming compliance with the required electrical characteristics.

Use in Solar Thermal Collectors

The functional additive package used in FREEZLIGHT® heat transfer fluids is suitable for operation in solar thermal systems.
However, FREEZLIGHT® −20 °C is not recommended for solar collectors because it does not provide a sufficient low-temperature safety margin for equipment and pipelines located outside the building.
Solar collectors are affected by:

• the minimum local temperature;
• prolonged periods of frost;
• strong wind;
• circulation shutdown;
• emergency equipment shutdown;
• possible dilution of the fluid by residual water.

For this reason, we recommend FREEZLIGHT® −32 °C for solar thermal collectors.
Higher pressure in a closed solar thermal circuit raises the boiling temperature of the heat transfer fluid, but it does not prevent thermal ageing during prolonged overheating. The boiling temperature and the permissible continuous operating temperature are different characteristics.
A solar thermal system must have a correctly sized expansion vessel, a functioning safety valve, circulation monitoring, and the overheating and stagnation protection specified by the equipment manufacturer.

Material Compatibility

FREEZLIGHT® −20 °C may be used in systems containing:
• carbon steel;
• stainless steel;
• cast iron;
• copper;
• brass;
• bronze;
• aluminium alloys;
• polypropylene pipes;
• PEX;
• PE-RT;
• multilayer composite pipes.

Final compatibility is determined not only by the pipe material. The boiler design, heat exchanger material, pump seals, gaskets, sealants, expansion vessel diaphragm, and equipment manufacturers’ recommendations must also be considered.
Seals must be suitable for long-term operation with aqueous glycol solutions.

Preparing the System Before Filling

1. Check whether the equipment manufacturer permits the use of propylene glycol heat transfer fluids.
2. Flush rust, sludge, old heat transfer fluid, and other contamination from the system.
3. Remove as much water as possible after flushing or pressure testing.
4. Check the tightness of pipes, threaded joints, valves, pumps, and heat exchangers.
5. Check the condition and capacity of the expansion vessel.
6. Make sure the circulation pump provides the required flow rate.
7. Bleed air successively from all circuits during filling.
8. After the first heating and cooling cycle, recheck the pressure and system tightness.

Aqueous glycol solutions place greater demands on sealing quality than water. Connections that did not leak while operating with water may begin to show slight seepage after the system is filled with heat transfer fluid.

Does the Heat Transfer Fluid Need to Be Diluted

FREEZLIGHT® −20 °C is supplied ready to use. No additional dilution with water is required.
Adding water:

• reduces the propylene glycol concentration;
• raises the crystallization onset temperature;
• reduces the low-temperature safety margin;
• changes the ratio between the base fluid and the additive package.

If water has been added or may remain in the system, the concentration of the heat transfer fluid must be checked after thorough mixing.

Can It Be Mixed with Other Heat Transfer Fluids

We do not recommend mixing FREEZLIGHT® −20 °C with heat transfer fluids of unknown composition.
Different products may contain incompatible corrosion inhibitors, buffering agents, stabilisers, antifoam components, and dyes.
Possible consequences of mixing include:
• cloudiness;
• sediment formation;
• foaming;
• a change in pH;
• reduced corrosion protection;
• blockage of narrow channels;
• shortened service life.
When changing from another product, the system should be drained as completely as possible and flushed.

Important Limitations

The following is not recommended:
• using FREEZLIGHT® −20 °C in outdoor systems without an adequate low-temperature safety margin;
• using it in solar thermal collectors instead of FREEZLIGHT® −32 °C;
• filling external heat pump circuits;
• using it in electrode boilers without the manufacturer’s approval;
• mixing it with heat transfer fluids of unknown composition;
• diluting it with water without subsequently checking the concentration;
• allowing prolonged overheating or local boiling;
• using it in a drinking water circuit;
• filling a contaminated or leaking system.

Operation and Service Life

During operation, monitor:
• system pressure;
• the absence of leaks;
• circulation pump operation;
• the condition of the heat transfer fluid;
• the appearance of sediment;
• changes in colour or odour;
• the amount of water or heat transfer fluid added.
Regular topping up with water indicates a leak. First identify and eliminate the cause, then restore the required heat transfer fluid concentration.
The expected service life of FREEZLIGHT® −20 °C is up to 5 years when the system is correctly prepared and operated.
Overheating, contamination, excessive contact with air, frequent addition of water, and mixing with other products shorten the service life.

Storage and Safety Precautions

Store the heat transfer fluid:
• in a tightly closed container;
• in a covered indoor area;
• protected from direct sunlight;
• away from sources of intense heat;
• separately from food products;
• out of the reach of children and animals.
Propylene glycol heat transfer fluid is less toxic than ethylene glycol formulations, but it is still a technical fluid.
Protective gloves and safety glasses are recommended during handling. Do not allow the product to enter drinking water or food products.
In case of contact with the eyes or skin, rinse the affected area with plenty of water.

Which heating fluid to choose, read this link

Click on the link and choose a heating and coolant fluid based on:

propylene glycol

glycerin

ethylene glycol

Frequently Asked Questions

What does the −20 °C rating mean?

It is the temperature at the onset of crystallization. With further cooling, the product gradually thickens and circulation may stop.

Is FREEZLIGHT® −20 °C suitable for a private home?

Yes, provided that the entire system is located inside the building, has no outdoor heat exchangers, and does not pass through unheated areas.

Can it be used in underfloor heating?

Yes. After pressure testing the circuits, remove as much water as possible and check the concentration after filling the system.

Does the heat transfer fluid need to be diluted?

No. FREEZLIGHT® −20 °C is supplied ready to use.

Can water be added?

Adding water raises the crystallization onset temperature. After a significant addition of water, check the concentration using a refractometer.

Can FREEZLIGHT® −20 °C be used in solar thermal collectors?

The additive package is suitable for solar thermal systems, but the −20 °C concentration does not provide the recommended safety margin for outdoor collectors and pipelines. We recommend FREEZLIGHT® −32 °C for solar thermal collectors.

When should FREEZLIGHT® −32 °C be selected?

When the system has outdoor sections or rooftop heat exchangers, passes through unheated rooms, or requires a greater low-temperature safety margin.

Can FREEZLIGHT® be mixed with another antifreeze?

It is not recommended. Different additive packages may be incompatible and may impair the properties of the final mixture.

Can automotive antifreeze be used?

It is not recommended. Automotive antifreezes are designed for different materials, temperature conditions, and operating environments.

How long does the heat transfer fluid last?

The expected service life is up to 5 years. Overheating, contamination, leaks, frequent addition of water, and mixing with other products shorten this period.

How to Order FREEZLIGHT® −20 °C

Before ordering, it is advisable to determine:
• the total system volume;
• whether there are outdoor pipelines or heat exchangers;
• the boiler type;
• the minimum temperature of the coldest section;
• the approximate volume of residual water;
• the required package size.
Novohim managers will help determine which heat transfer fluid is suitable for the system design and operating conditions: FREEZLIGHT® −20 °C or FREEZLIGHT® −32 °C.

To learn more about replacing the coolant in your heating system click on the link

Click on the link and see all products in this category

The Propylene Glycol Heat Transfer Fluid FREEZLIGHT® −20 °C for Heating Systems message appeared first on Novohim.

Short Description

FREEZLIGHT® −32 °C is a ready-to-use propylene glycol USP heat transfer fluid for heating systems, underfloor heating, combi boilers, heat pumps, solar thermal collectors and refrigeration equipment. It contains a carboxylate functional additive package, is covered by a state sanitary and epidemiological expert conclusion, and protects the system against freezing, corrosion and deposit formation. The FREEZLIGHT® product line has been manufactured since 2010 and, with correct system preparation and operation, provides a service life of more than 5 years.

Key Specifications

What FREEZLIGHT® −32 °C Is and What It Is Used For

FREEZLIGHT® −32 °C is a ready-to-use, non-freezing propylene glycol USP fluid for heating, cooling and heat transfer circuits that may be exposed to temperatures below 0 °C. It transfers thermal energy, protects equipment from freeze damage and creates a corrosion-inhibited environment inside the system.
The formulation contains propylene glycol, demineralised water and a carboxylate functional additive package. Corrosion inhibitors protect ferrous and non-ferrous metals, stabilising components reduce deposit formation, and antifoam additives control foaming during filling and circulation.
The product also contains a special fluorescent tracer that assists professional leak detection.
FREEZLIGHT® heat transfer fluids have been manufactured since 2010. The formulation has been refined on the basis of practical operation in private houses, administrative and industrial buildings, heat pump systems and solar thermal collector circuits.

Intended Use

The fluid is used to protect systems against freezing during emergency or seasonal shutdowns, transfer thermal energy, reduce corrosion of metal components and limit deposit formation.
Propylene glycol has significantly lower toxicity than ethylene glycol. The product is covered by a state sanitary and epidemiological expert conclusion and may be used at food-industry facilities within the scope specified in that conclusion.

Applications

• radiator heating systems
• hydronic underfloor heating systems
• gas, electric, solid-fuel and pellet boilers
• combi boilers, subject to equipment manufacturer requirements
• heat pumps
• solar thermal collectors and other solar thermal systems
• heat recovery systems
• refrigeration equipment
• process cooling systems
• industrial heat exchangers and closed-loop heat transfer circuits

This fluid must not be used in electrode boilers unless the boiler manufacturer explicitly permits it. Electrical conductivity is part of the operating principle of this equipment, so the required fluid composition is specified by the boiler manufacturer.
FREEZLIGHT® −32 °C is compatible with most modern heating systems, provided the technical requirements of the boiler, pump, heat exchanger and sealing-material manufacturers are followed.
Practical note from Novohim. Fluid selection must not be based on crystallisation temperature alone. Maximum circuit temperature, operating pressure, system materials and equipment manufacturer requirements must also be considered.

Compatible Materials

• carbon steel and stainless steel
• cast iron
• copper
• brass and bronze
• aluminium alloys
• polypropylene, PEX, PE-RT and multilayer composite pipes
• rubber and polymer seals designed for water-glycol solutions

Before filling, verify compatibility with the specific equipment and sealing materials using the manufacturers’ technical documentation.

How the Heat Transfer Fluid Works in Boilers and Solar Thermal Systems

During circulation, the fluid absorbs heat in the boiler, heat pump, solar thermal collector or another heat source and transfers it to radiators, underfloor heating loops or heat exchangers. At the same time, carboxylate inhibitors limit corrosion processes on metal surfaces.
Unlike water, the fluid performs two functions: heat transfer and freeze protection. However, a water-propylene glycol mixture has lower specific heat capacity and thermal conductivity and higher viscosity than water. Pump capacity, hydraulic resistance and heat exchange area must therefore be considered when designing a system or converting an existing water-filled system to glycol.

What the −32 °C Initial Crystallisation Temperature Means

The −32 °C rating indicates the initial crystallisation temperature, not immediate complete solidification. As cooling continues, separate ice crystals begin to form and the remaining liquid phase becomes richer in propylene glycol.
The fluid gradually develops a thick, crystalline consistency without the abrupt volumetric expansion associated with freezing water. This reduces the risk of damage to pipes, radiators, pumps and heat exchangers. When the temperature rises, the fluid regains flowability, provided it has not been exposed to prolonged overheating or severe contamination.
Practical note from Novohim. The initial crystallisation temperature depends on propylene glycol concentration. Adding water raises this temperature; after a major top-up, concentration should be checked with a refractometer.

What Determines the Boiling Temperature

Boiling temperature depends on both fluid composition and system pressure. At atmospheric pressure it is lower than in a sealed circuit operating under positive pressure. This is why heating-system and solar-thermal documentation may state different upper temperature limits.
In solar thermal systems, higher pressure increases the boiling temperature, but it does not provide unlimited thermal stability. Prolonged overheating accelerates propylene glycol degradation and additive depletion. The maximum operating regime must be determined from the equipment data sheet, operating pressure and collector stagnation temperature.
Practical note from Novohim. Boiling temperature and permissible continuous operating temperature are not the same parameter. A fluid may not yet be boiling while already ageing rapidly due to overheating.

Why Propylene Glycol Is Selected

The FREEZLIGHT® range includes propylene glycol-, ethylene glycol- and glycerine-based heat transfer fluids. Selection depends on toxicological properties, cost, viscosity and system design.

Main Properties and Advantages

1. USP-grade propylene glycol base fluid
2. initial crystallisation temperature of −32 °C
3. carboxylate corrosion inhibitor technology
4. protection of ferrous and non-ferrous metals
5. reduced scale and deposit formation
6. fluorescent tracer for professional leak diagnostics
7. state sanitary and epidemiological expert conclusion
8. manufactured in Ukraine under the FREEZLIGHT® brand since 2010
9. service life of more than 5 years with correct system preparation and operation

Practical Operating Experience

Operational experience shows that service life depends not only on fluid quality. System cleanliness, leak tightness, temperature regime, air content and the frequency of water top-up all affect fluid condition.
Repeated addition of fresh water introduces oxygen and hardness salts, changes propylene glycol concentration and accelerates depletion of the protective additive package. If frequent top-up is required, the leak must be found and repaired first.
The fluorescent tracer assists professional detection of microleaks. In domestic conditions, very small leaks can also be located with chalk: rub chalk onto the fingers and check threaded joints, valves and other likely leak points. Moisture marks are easier to see on the chalk.

System Preparation Before Filling

Check system leak tightness before filling. Fill the circuit with water, install a pressure gauge and apply the test pressure specified by the system design and equipment manufacturer. After the holding period, monitor the gauge and inspect threaded joints, pumps, shut-off valves, safety groups, automatic air vents, heat exchangers and expansion vessels.
Glycol fluid has a higher viscosity than water, but in practice it is also more demanding of seal quality. Connections that remained dry with water may begin to weep after conversion to a water-glycol solution. Threaded joints should be assembled using suitable seals or plumbing flax together with a compatible sealing paste.
A system that has operated for a long time with water or old heat transfer fluid should be flushed if sediment, rust or other contamination is present. After hydrostatic testing, drain the water as completely as possible because residual water reduces the concentration of ready-to-use fluid and raises the initial crystallisation temperature.
Detailed guidance is provided in the article “Recommendations for Replacing Heat Transfer Fluid and Maintaining the Heating System”.

Recommendations for Use

• do not mix with unknown fluids or products from other manufacturers without prior compatibility testing
• use the same fluid for top-up; add water only after accounting for the resulting change in crystallisation temperature
• demineralised water is preferred for dilution; potable tap water may be used in domestic systems if it is not excessively hard and contains no sediment or mechanical contamination
• after filling, remove air from the circuits and recheck pressure after the first heat-up and cool-down cycle
• avoid prolonged operation above temperatures specified by the system design and equipment manufacturer
• assess fluid condition not only by colour but also by concentration, clarity, sediment and odour changes

Why Automotive Antifreeze Should Not Be Used

Automotive antifreeze is formulated for internal-combustion-engine cooling systems, which involve different materials, thermal cycles and additive requirements. In heating systems it may create undesirable operating risks, and many automotive coolants are based on toxic ethylene glycol.
Stationary heating systems require a specialised heat transfer fluid with an additive package designed for long-term circulation through boilers, radiators, underfloor heating loops and heat exchangers.

Application Limitations

• use in electrode boilers only with explicit approval from the equipment manufacturer
• do not mix with fluids of unknown composition
• check system leak tightness and technical condition before use
• if the system requires repeated water top-up, locate and eliminate the leak first
• do not exceed the temperature and pressure limits specified by the equipment manufacturer
• use only in circuits whose materials have confirmed compatibility with water-propylene glycol solutions

Safety Precautions

The lower toxicity of propylene glycol fluid compared with ethylene glycol formulations does not eliminate the need for safe handling. Wear protective gloves and eye protection. In case of skin or eye contact, rinse thoroughly with water. Do not reuse empty containers for drinking water or food products. Keep out of reach of children and animals.

Storage

Store in the original tightly closed container, under cover and protected from precipitation, direct sunlight and heat sources. Prevent contamination. After prolonged storage, mix the contents before use.

Conclusion

FREEZLIGHT® −32 °C is a ready-to-use propylene glycol heat transfer fluid for systems requiring freeze protection, corrosion inhibition and an improved toxicological profile. It is used in heating systems, underfloor heating, heat pumps, solar thermal systems and process equipment in accordance with the equipment manufacturer’s requirements.
A service life exceeding 5 years is achieved with a clean, leak-tight system, correct temperature control, no repeated water top-up and periodic monitoring of the fluid condition.

FAQ

Can FREEZLIGHT® −32 °C be used in a combi boiler?

Yes, subject to approval by the boiler manufacturer. Propylene glycol is significantly less toxic than ethylene glycol, but any transfer-fluid ingress into the potable-water circuit remains unacceptable.

Is it suitable for underfloor heating?

Yes. When converting from water, account for the higher viscosity of the water-propylene glycol solution and verify sufficient circulation in long loops.

Can it be used in an electrode boiler?

Not without explicit approval from the electrode-boiler manufacturer. This equipment relies on a specified electrical conductivity of the fluid.

Can FREEZLIGHT® be mixed with another heat transfer fluid?

Not without compatibility testing. Different additive packages may interact, form deposits or lose protective performance.

Can water be added?

Only with the understanding that water lowers propylene glycol concentration and raises the initial crystallisation temperature. After a substantial top-up, verify concentration with a refractometer.

What water should be used for dilution?

Demineralised water is preferred. Potable tap water may be used in domestic systems if it is not excessively hard and contains no sediment or mechanical contamination.

Why did leaks appear after replacing water?

Water-glycol solutions are more demanding of seal quality. Pressure-test the system with a gauge before filling and repair all leaks.

What does −32 °C mean?

It is the initial crystallisation temperature, not immediate complete freezing. As cooling continues, the fluid gradually thickens as crystals form.

Why are higher temperatures stated for solar thermal collectors?

Higher pressure in a sealed solar thermal circuit increases boiling temperature. However, the permissible continuous temperature is determined by the equipment data sheet because overheating accelerates fluid degradation.

How can a small leak be found?

Professionally, by using the fluorescent tracer and diagnostic equipment. In domestic systems, suspected leak points can also be checked with chalk because moisture marks are easy to see.

When should the fluid be replaced?

Under proper conditions, service life exceeds 5 years. Replace earlier if severe contamination, sediment, significant odour change, loss of concentration or additive depletion is observed.

How is it different from automotive antifreeze?

Its additive package is designed for long-term operation in stationary heating and heat transfer systems. Automotive coolants are intended for different duty conditions and often contain toxic ethylene glycol.

Go to the link and choose your Heat transfer fluid (HTF):

propylene glycol-based

based on glycerin

based on ethylene glycol

What is the right way to change the HTF?    Find out by following this link

Perhaps you still have more questions, then it will be useful to see more :                        

How to choose a heat transfer fluid?                          Follow this link

Which is better as a HTF or water?             Read by clicking here

The Propylene Glycol Heat Transfer Fluid for Heating Systems and Boilers FREEZLIGHT −32 °C message appeared first on Novohim.

Glycerin-based home heating fluid to buy is a profitable solution to the question of choosing a heating fluid. First of all – it is a safe heating fluid based on glycerin. Heat transfer fluid for heating a private house you can buy in Kharkiv in an online store chemistry Novohim.

When selecting a heating fluid for a heating system, it is important to consider its efficiency, environmental friendliness and compatibility with the heating equipment. Glycerine-based coolant is one of the most popular solutions due to its ability to operate in systems at low temperatures down to -20°C. However, it has its own peculiarities that are worth considering.

Glycerine-based heating medium for heating systems: advantages and disadvantages

Glycerin is a non-toxic substance that has a high density compared to propylene glycol and ethylene glycol. This means that glycerin-based heat transfer fluid makes it difficult for the fluid to move through the pipes, especially after the system has been idle for a long time. Therefore, for efficient operation of the system, it is necessary to install a pump with a power reserve 3-5 times larger than for normal water.
The main advantage of glycerin as a heat transfer medium is its environmental friendliness and absence of toxic vapours under normal operating conditions. However, there are important limitations to its use.

Top 5 properties of the fiuid for heating a cottage -20 ºC:

1. Designed for the heating system of gas and electric boilers.
2. Has a large heat capacity and thermal conductivity
3. No corrosive effect on metals, rubber seals, polymers and other materials
4. Guarantees impossibility of breakage and failure of equipment due to freezing of fluid inside the system
5. Operating temperature range in heating system from -22 °C to +90 °C.

Temperature limitations for glycerine heat transfer fluid

Glycerine has a low temperature resistance. It is dangerous to use it at temperatures above 90°C, as overheating causes glycerine to decompose and release toxic acrolein, requiring immediate replacement of the coolant.
Glycerine based heat transfer fluid is only suitable for temperature controlled systems such as gas boilers where the temperature in the heat exchanger does not exceed 60-70°C. It is the ideal solution for stable system operation without the risk of overheating.

Inconsistency for electric and solid fuel boilers

Unlike gas boilers, in electric boilers the heating elements can heat up to 300°C, which is critical for glycerine coolant. In addition, solid fuel boilers are characterised by sharp temperature fluctuations on the walls of the heat exchanger when fuel is added. These fluctuations lead to rapid overheating of the glycerol and its decomposition.
Consequently, glycerine coolant is not recommended for such systems, as there is a high risk of accidents due to incorrect operation of the coolant.

Consequently, when planning to use glycerine-based heat transfer fluid, you should always consider the specifics of your heating system and boiler type to avoid circulation and overheating problems.

Go to the link and choose your heat transfer fluid:

propylene glycol-based

based on glycerin

based on ethylene glycol

Advantages of glycerin home heating fluid -20°C :

• Unlike water, it does not freeze in the system
• To buy the glycerine heating fluid for home -20°C means to buy the product safe for people and environment
• Can be used in systems of private houses and food enterprises
• It can be used in conditioning and refrigeration systems
• Thanks to the additives in its composition has a low foaming
• Does not corrode and has a beneficial effect on rubber seals

Glycerine-based radiator coolant provides even heat distribution throughout the system, but as noted, its high density can create circulation problems if the pump is not powerful enough.

Glycerin-based underfloor heating fluid can also be used, but only where temperatures are limited to safe levels and the system has a stable temperature regime.

We offer to buy glycerine-based heat transfer fluid at the manufacturer’s price with a certificate and guarantee from the manufacturer.

Heat transfer fluid for home heating system Freezlight -20°C can be bought in Kharkiv from the warehouse of Novohim Company and with delivery in Kyiv, Poltava, Sumy, Dnipro, Vinnytsia, Kherson and all over Ukraine.

The Glycerin-based home heating fluid Freezlight -20°C message appeared first on Novohim.

Heat transfer fluid for heating systems based on glycerin: an effective solution for reliable heating of your home can be purchased in the online shop Novohim in Kharkiv.

Choosing the right coolant for the heating system is an important step to ensure stable operation of the equipment even at low temperatures (the operating temperature range of such a thermal agent is from -33 °C to +90 °C). Heat transfer fluid for heating system based on glycerin is a modern solution, which is gaining popularity due to its high anti-corrosion and heat-capacity properties. It is especially suitable for private homes where a reliable and energy efficient heating system is required. In addition, the use of this product in the heating system guarantees the impossibility of equipment breakdown and failure due to freezing of the liquid inside the system.

Glycerine-based heating antifreeze with a freezing point of -32°C has a number of important advantages that make it an ideal choice for heating systems:

1. Freeze protection: Glycerine coolant provides effective freeze protection down to -32°C, allowing it to be used in harsh winters.
2. Environmentally friendly and safe: Glycerine is biodegradable and safe for the environment, making it an optimal choice for residential and food processing applications.
3. Equipment durability: Thanks to anti-corrosion additives, glycerin-based heating system fluid prevents scale formation and corrosion, which significantly extends the life of the system.
4. Energy efficiency: Energy efficient glycerine antifreeze for heating systems has a high heat capacity, which helps to save energy and reduce heating costs. Significantly increases heat transfer compared to water.
5. Anticorrosive and antifoaming additives: Protects againstcorrosion processes of metals (cast iron, steel and non-ferrous metals). Prevents destruction of seals (Teflon, rubber, polyethylene, paronite and polyvinyl chloride);

The -32°C glycerine boiler coolant is ideal for heating systems with gas boilers. Non-freezing glycerine-based heating fluid for heating systems is recommended for private houses, cottages and industrial facilities, where it is necessary to ensure uninterrupted heating even at sub-zero temperatures

Heat transfer medium for heating systems based on glycerine: important aspects of selection and use.

The use of glycerine coolant has a number of advantages, such as high environmental friendliness, low toxicity and the ability to provide the system with protection against freezing. However, it is important to take into account the specific characteristics of this type of coolant.

Density and the need for a more powerful pump

One of the main physical characteristics of glycerine coolant is its high density, which is significantly higher than propylene glycol and ethylene glycol solutions. This property, although useful from the point of view of efficient heat transfer, significantly hampers the circulation of the fluid through the pipeline. This is especially noticeable when the system has not been in operation for a long time and needs to be restarted. Therefore, for stable operation of the system with glycerine coolant, a circulation pump with a power reserve exceeding the standard requirements for water systems by 3-5 times is required. This will avoid problems with pumping thick coolant and ensure uniform heat distribution throughout the system.

Temperature limitations

Glycerine, which is the basis of this thermal fluid, has temperature limitations. Glycerine-based heat transfer fluid cannot withstand temperatures above 90°C for long periods of time. When overheated, glycerine begins to decompose, releasing a toxic substance – acrolein. Acrolein has a pungent odour and is harmful to health, so its release requires immediate replacement of the coolant. This limitation requires a careful approach to boiler selection and careful control of the temperature regime.

Optimum conditions of use: gas boilers

To ensure the safe operation of glycerine-based heat transfer fluid, it is best used in systems with gas boilers. Gas boilers provide a stable temperature that does not exceed the optimum range of 60-70°C, which is safe for glycerine and avoids overheating.

In contrast to gas boilers, electric heating element boilers can reach temperatures of up to 300°C, which creates a high risk of glycerin decomposition. It is also not recommended to use glycerine coolant in solid fuel boilers, as they tend to have sudden temperature fluctuations on the heat exchanger at the moment of adding fuel, which can also lead to decomposition of the coolant and release of hazardous substances.

Go to the link and choose the coolant:

propylene glycol-based

on glycerine-based

based on ethylene glycol

You can buy the heating fluid for heating systems from the warehouse of Novohim Company in Kharkiv or with delivery in Kyiv, Poltava, Sumy, Zaporizhzhia, Kherson and all over Ukraine.

The Glycerine-based heating fluid for heating systems Freezlight -32°C message appeared first on Novohim.

What Is FREEZLIGHT® −20 °C

FREEZLIGHT® −20 °C is an aqueous ethylene glycol solution containing a functional additive package. It is designed to transfer thermal energy and protect equipment against damage caused by accidental freezing.
Ethylene glycol lowers the crystallization temperature of the aqueous solution, while the additive package:

• reduces the corrosive activity of the heat transfer fluid;
• protects metals used in the system;
• supports solution stability;
• controls foaming;
• reduces the risk of deposit formation.

The product is manufactured by AO Khimprom LLC. FREEZLIGHT® heat transfer fluids have been manufactured since 2010, with control of raw materials, formulation and crystallization onset temperature.

Key Specifications

Manufacturer AO Khimprom LLC, Ukraine

What Does −20 °C Mean

The designation −20 °C indicates the crystallization onset temperature, not the instant complete freezing of the entire fluid volume.
With further cooling:

• crystals gradually begin to form in the liquid;
• viscosity increases;
• fluid mobility decreases;
• the load on the circulation pump increases;
• crystalline blockages may form in narrow channels.

The system may remain mechanically intact while losing normal circulation and operating performance.
The actual temperature of the coldest section must therefore remain above −20 °C, with an appropriate engineering safety margin.
FREEZLIGHT® −20 °C should not be selected for a system in which the temperature of individual components may approach the stated crystallization onset temperature.

When Is FREEZLIGHT® −20 °C the Right Choice

FREEZLIGHT® −20 °C based on ethylene glycol is recommended when:

• the system is sealed and has a single isolated circuit;
• all pipework is located inside the building;
• heat exchangers are not installed on a roof or external wall;
• the circuit does not pass through an unheated attic;
• equipment is not directly exposed to frost and wind;
• contact with drinking water or domestic hot water is excluded;
• the facility is heated continuously or regularly;
• flushing water has been removed as completely as possible;
• the actual temperature of the coldest section does not approach −20 °C;
• cost-effective filling of a large technical circuit is important.

FREEZLIGHT® −20 °C is suitable for indoor engineering systems at industrial, warehouse, administrative and commercial facilities.

When Should FREEZLIGHT® −32 °C Based on Ethylene Glycol Be Selected

FREEZLIGHT® −32 °C is recommended when:

• part of the pipework is located outdoors;
• a heat exchanger or cooling unit is installed on a roof;
• the circuit passes through unheated areas;
• equipment is exposed to strong wind;
• prolonged power outages are possible;
• the building may remain without heating for an extended period;
• the facility is operated seasonally;
• the approximate amount of residual water is unknown;
• the temperature of the coldest section may fall below −15 °C;
• an additional low-temperature safety margin is required.

FREEZLIGHT® −32 °C is selected not because it is a higher-quality product, but because its greater glycol concentration provides a larger low-temperature safety margin.

How to Choose Between the Four FREEZLIGHT® Heat Transfer Fluids

The choice is based on three principal criteria:

1. The minimum temperature of the coldest system section.
2. The presence of outdoor pipework or equipment.
3. Toxicological and operational safety requirements.

Follow the link and read what is better to fill in the heating system

Click on the link and choose your coolant:

based on propylene glycol

based on glycerine

ethylene glycol based

Applications of FREEZLIGHT® −20 °C

The heat transfer fluid is used in:

• sealed indoor heating systems;
• industrial and warehouse buildings;
• closed air-conditioning systems;
• indoor circuits of ventilation units;
• systems with chillers and fan-coil units;
• process heat exchangers;
• industrial refrigeration equipment;
• indoor heat-transfer circuits;
• heat-recovery systems;
• indoor equipment-cooling circuits.

Use must be permitted by the manufacturers of the boiler, circulation pump, chiller, heat exchanger and all other system components.
A heat transfer fluid intended for stationary engineering systems must not automatically be used as automotive antifreeze or engine coolant.

Ethylene Glycol Toxicity

Ethylene glycol is toxic. The main practical risk is associated with the fluid entering the human body, drinking water, food products or open domestic circuits.
For this reason, ethylene glycol-based FREEZLIGHT® −20 °C must not be used in:

• open heating systems;
• systems with an open expansion tank;
• combination boilers;
• drinking-water and domestic-hot-water circuits;
• food-production systems;
• systems where the heat transfer fluid may contact a product;
• locations where a leak may remain undetected;
• systems accessible to children or animals.

For these applications, we recommend a FREEZLIGHT® heat transfer fluid based on propylene glycol.

Thermophysical Properties

An aqueous ethylene glycol heat transfer fluid has properties different from those of water. Compared with water, it has:

• higher viscosity;
• lower specific heat capacity;
• lower thermal conductivity;
• higher hydraulic resistance;
• different thermal expansion characteristics.

Before replacing water with a glycol heat transfer fluid, the following should be checked:

• circulation pump capacity;
• pipe diameters;
• heat-exchanger surface area;
• expansion vessel capacity;
• balancing valve settings;
• allowable operating pressure.

The main purpose of an ethylene glycol heat transfer fluid is not to improve efficiency compared with water, but to protect the system against accidental freezing and corrosion.

Residual Water Changes the Crystallization Temperature

FREEZLIGHT® −20 °C is supplied at its ready-to-use concentration.
After flushing or hydrostatic testing, water may remain:

• in low sections of pipework;
• in radiators;
• in heat exchangers;
• in pumps;
• in manifolds;
• in horizontal pipe sections;
• in buffer tanks;
• in sections that cannot be fully drained.

Residual water dilutes the ready-to-use product and raises the actual crystallization onset temperature.
For example, if the total system volume is 1,000 litres but 100 litres of water remain after flushing, only approximately 900 litres of ready-to-use heat transfer fluid can be added. The proportion of the finished product in the final mixture is therefore reduced by approximately 10%.
After filling, the following steps are required:

1. Provide full circulation throughout the system.
2. Allow the fluid to mix evenly.
3. Take a sample from the operating circuit.
4. Check the concentration using a refractometer calibrated for ethylene glycol.
5. Correct the concentration if necessary.

A propylene glycol refractometer scale must not be used for testing an ethylene glycol heat transfer fluid because the calibration of aqueous ethylene glycol and propylene glycol solutions is different.
If the amount of residual water is unknown, we recommend selecting FREEZLIGHT® −32 °C from the outset.

Material Compatibility

FREEZLIGHT® −20 °C may be used in systems containing:
• carbon steel;
• stainless steel;
• cast iron;
• copper;
• brass;
• bronze;
• aluminium alloys;
• polypropylene;
• PEX;
• PE-RT;
• multilayer composite pipe.

Compatibility must not be assessed solely by pipe material. The following must also be considered:
• heat-exchanger material;
• circulation pump design;
• gaskets;
• seals;
• expansion vessel diaphragm;
• soldered joints;
• sealants;
• equipment manufacturer recommendations.
Not all rubber and polymer seals have the same resistance to aqueous glycol solutions.

System Preparation Before Filling

Before filling the system:

1. Confirm that the system is sealed and has a single isolated circuit.
2. Confirm that the equipment manufacturer permits ethylene glycol heat transfer fluids.
3. Completely remove the previous heat transfer fluid.
4. Flush the system to remove sludge, rust and deposits.
5. Drain the flushing water as completely as possible.
6. Check the system for leaks.
7. Check the condition and capacity of the circulation pump.
8. Check the expansion vessel capacity and pre-charge pressure.
9. Confirm that the safety group is operational.
10. Remove air from all circuits during filling.

Aqueous glycol solutions may penetrate weak joints that did not leak during operation with water. All leakage must be eliminated before the system is commissioned.

Before filling the anti-freeze into the heating system, we recommend flushing the system with a deposit remover Read more about flushing the system in the article “Recommendations for replacing the coolant and maintenance behind the heating system”.

Does the Heat Transfer Fluid Need to Be Diluted?

FREEZLIGHT® −20 °C is supplied ready to use. Additional dilution is not required.
Adding water:

• raises the crystallization onset temperature;
• reduces the low-temperature safety margin;
• changes the additive concentration;
• may reduce corrosion protection;
• makes composition control more difficult.

If dilution is performed according to a prior engineering calculation, demineralized water must be used and the final concentration must be checked with a refractometer calibrated for ethylene glycol.

Can It Be Mixed with Other Heat Transfer Fluids

We do not recommend mixing FREEZLIGHT® −20 °C with products of unknown composition.
Different heat transfer fluids may contain incompatible:

• corrosion inhibitors;
• buffer components;
• stabilizers;
• antifoam additives;
• dyes;
• leak-sealing additives.

Possible consequences of mixing include:
• cloudiness;
• sediment formation;
• foaming;
• pH changes;
• reduced corrosion protection;
• blockage of narrow channels;
• shortened service life.

When changing from another product, the system should be drained as completely as possible and flushed.

Important Limitations

FREEZLIGHT® −20 °C is not recommended for:

• outdoor systems without an adequate low-temperature safety margin;
• equipment installed on roofs or external walls;
• solar collectors;
• open heating systems;
• systems with an open expansion tank;
• combination boilers;
• drinking-water and domestic-hot-water circuits;
• food and pharmaceutical production facilities;
• electrode boilers unless specifically permitted by the manufacturer;
• systems containing incompatible seals;
• mixing with heat transfer fluids of unknown composition;
• use as automotive antifreeze without the relevant approval.

For outdoor technical systems, we recommend FREEZLIGHT® −32 °C based on ethylene glycol.
For residential facilities and systems with enhanced safety requirements, we recommend FREEZLIGHT® heat transfer fluids based on propylene glycol.

Operation and Service Life

During operation, monitor:

• system pressure;
• absence of leaks;
• circulation pump operation;
• crystallization onset temperature;
• the appearance of the heat transfer fluid;
• the presence of sediment;
• changes in colour or odour;
• the amount of added water.

The expected service life is up to 5 years when the system is properly prepared and operated.
Overheating, contamination, continuous exposure to air, frequent water addition and mixing with other products shorten the service life.

Safety Measures

When handling the product:

• wear protective gloves and safety glasses;
• prevent the fluid from entering the mouth;
• do not store the product in beverage bottles or food containers;
• do not reuse empty packaging for water or food;
• clean up spilled heat transfer fluid immediately;
• keep children and animals away from the storage area;
• wash hands thoroughly after handling.

If swallowed, obtain medical attention immediately and provide the physician with information about the product composition.

Storage

Store the heat transfer fluid:

• in tightly sealed packaging;
• in a covered indoor area;
• separately from food products;
• away from drinking water;
• protected from direct sunlight;
• in a place inaccessible to children and animals.

Do not transfer the product to unlabelled containers.

Frequently Asked Questions

What Does −20 °C Mean?

It is the crystallization onset temperature. With further cooling, the heat transfer fluid gradually becomes more viscous and circulation may stop.

Which Systems Is FREEZLIGHT® −20 °C Intended For?

It is intended for sealed single-circuit indoor heating, air-conditioning, cooling and heat-transfer systems.

Can It Be Used in a Private House?

Technically, it can be used in a fully sealed single-circuit system. However, for residential buildings Novohim recommends a propylene glycol heat transfer fluid.

Can It Be Used in a Combination Boiler?

No. If the heat exchanger is damaged, ethylene glycol may enter the domestic hot-water circuit.

How Does FREEZLIGHT® −20 °C Differ from the Ethylene Glycol −32 °C Version?

FREEZLIGHT® −20 °C is recommended for indoor circuits without exposure to severe frost. FREEZLIGHT® −32 °C provides a larger low-temperature safety margin and is intended for systems with outdoor or particularly cold sections.

Does the Product Need to Be Diluted?

No. The heat transfer fluid is supplied ready to use.

Can Water Be Added?

Adding water raises the crystallization onset temperature. After a significant water addition, check the concentration using a refractometer calibrated for ethylene glycol.

Is the Heat Transfer Fluid Suitable for Solar Collectors?

No. For solar collectors, we recommend FREEZLIGHT® −32 °C based on propylene glycol.

Can It Be Mixed with Another Antifreeze Fluid?

Mixing is not recommended because different additive packages may be incompatible.

What Is the Expected Service Life?

Up to 5 years when the system is properly prepared and operated without overheating, leaks or frequent water addition.

Follow the link and read more about which antifreeze to choose for heating

The FREEZLIGHT® −20 °C Ethylene Glycol Heat Transfer Fluid message appeared first on Novohim.