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

PATENT BLUE A

Synonyms:				Acid Blue 7, Alphazurine A, C.I. 42080

CAS No.:				3486-30-4

C.I. No.:				42080

Chemical Formula:			C37H35N2NaO6S2

Formula Weight:			690.82

Appearance:				Blueish to Maroon to Dark Purple Powder

Identification (IR):			Conforms to Structure

UV-vis (in H2O)			E(638 +/- 3nm) = 65,000 minimum
					E(410 +/ -3nm) = 8,000 minimum
					E(312 +/- 3nm) = 10,000 minimum

Loss on Drying:			5% maximum

Solubility:				Clear to Opaque, Dark Blue Solution
1mg/mL (0.1), H2O

ffective: 03/10/16