Fluorescein is a water-soluble organic dye which, in solutions with a pH greater than 7, produces an intense green fluorescent colour. Sodium fluorescein is highly visible to the human eye with an intense green colour, it also emits fluorescence when illuminated with ultraviolet light.
IDENTIFICATION AND PROPERTIES
Name: Fluorescein sodium
Synonyms: Fluorine acid yellow 73, C.I. 45350, Uranine.
- Physical state at 20ºC: Solid
- Colour: Yellow
- Odour: Odourless
- Vapour pressure at 50ºC: <300000 Pa (300kPa)
- pH: 4-10
- Solubility property: Soluble in water
- Flash point: >200ºC
- Textile dye
- Professional use/industrial user only