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

NIGROSIN WATER SOLUBLE
(C. I. 50420)

Synonyms:				Acid Black 2

CAS No:				8005-03-6

Appearance:				Black Crystalline Powder	

Lambda max.:			570 nm (In 50 % Ethanol)

Solubility:				Opaque black with purple cast solution
 1 mg/ml, H2O

Effective: 01/05/09