Sodium fluorescein/uranine

Application of sodium uranine

Fluorescein can be purchased at Novohim’s online chemical shop.

In analytical chemistry

The dinatrium salt of fluorescein is used as a luminescent acid-base indicator in laboratory research.

In biochemistry and molecular biology

Sodium uranyl isothiocyanate derivatives are used as biological dyes for the detection of antigens and antibodies. Some halogen-substituted fluorescein, e.g. eosins, are also of practical importance.

Uranine for heating networks

Fluorescein is used in heating networks to detect water leaks. The dosage of uranine for this purpose is very small and amounts to 2-5 grams per 1 cubic metre of water.

It is added to closed heating systems and the water is coloured green.

The advantages of using pitchblende:

1. Reduction of unauthorised use of water
2. Quick identification of heating system breaks by coloured sweeps
3. Heat exchanger defects are coloured green

The basis for the use of fluorescein dinatrium salt – Standard Instruction on technical operation of heat networks of communal heat supply systems.

In the clothing industry

Sodium uranine is sewn into the fabric of life jackets when such a waistcoat falls into the water, a huge bright green stain is formed, clearly visible from an aircraft.

In medicine

In ophthalmological practice sodium fluorescein solution is used to diagnose

Physicochemical properties of uranine