FLUORESCEIN

Common name	Fluorescein
Uranine (its sodium salt)
C.I. number	45350
Solubility in water	Poor Uranin 50%
Solubility in ethanol	2.21% Uranin 7.19%
Absorption maximum	493.5
Colour	Yellow
Empirical formula	C₂₀H₁₂O₅ Uranine C₂₀H₁₀Na₂O₅
Formula weight	332.31 Uranine 376.282