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

INDOCYANINE GREEN

Synonyms:				Cardio Green; 1H-Benzenedolium,, 2-7-1, 3-dihydro-						1, 1-dimethyl-3-(4-sulfobutyl)

CAS No.:				3599-32-4

Chemical Formula:			C43H48N2O6S2

Formula Weight:			774.98

Description:				Dark Green to Brown to Black crystalline powder

Identification:			To conform to standard

Assay					94%   minimum
(Calculated on dry bases):		100% maximum

Loss on drying:			6% maximum

Sodium Iodide:			5% (dry bases) maximum

Arsenic:				8 ppm maximum

Lead:					0.001% maximum

Lambda max. (H2O):		779nm +/- 3nm

Solubility:				Clear Dark Green Solution
 (1 mg/ml H2O)

Effective: 01/13/09