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

PATENT BLUE VF
(C. I. 42045)

Synonyms:			Disulphine Blue; Sulphan Blue; Acid Blue 1

CAS No:			129-17-9

Formula:			C27H31N2NaO6S2

F.W.:				566.68

Appearance:			Dark bluish-green to violet powder

Solubility:			Soluble in alcohol

Lambda max:		635 - 640 nm

Absorbance:			750 minimum
(1% / 1cm)

Loss on drying:		5% maximum

Effective: 01/05/13