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

ERYTHROSIN B SPIRIT SOLUBLE

Synonyms:					Solvent Red 140;  2,4,5,7-Tetraiodofluorescein

CAS No.:					15905-32-5

Chemical Formula:				C20H8I4O5

Formula Weight:				835.90

Appearance:					Red to red-orange powder

Dye content:					95.0% minimum

Loss on drying @ 135°C:			5.0% maximum

Solubility:					Clear orange solution
 (0.05%, MeOH)   

Lambda max.:				533nm in methanol 

Heavy Metals (as Pb):			40 mg/kg maximum

Effective Date: 02/19/10