S P E C I F I C A T I O N S

FLUORESCEIN WATER SOLUBLE
(C. I. 45350)

Synonyms:				C.I. Acid Yellow 73; D&C Yellow No. 8; Fluorescein
					Sodium

CAS No:				518-47-8

Chemical Formula:			C20H10O5Na2

Formula Weight:			376.28

Appearance:				Dark brownish-red to dark orange red powder

Identification:			To pass tests

Assay:					90.0% - 102.0%

Loss on drying at 135 °C/1hr:	17% maximum

Solubility 1mg/ml in H2O:	Clear to slightly hazy dark yellow to brownish
					Yellow solution with greenish fluorescence.

Lambda Max:			491 nm in Water

Effective: 01/15/09