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

AZURE B / AZURE 1

Synonyms:				N,N,N’-Trimethylthionin;
					Azure I; Methyleneazure; C.I. 52010

CAS No.:					531-55-5

Chemical Formula:				C15H16CIN3S

Formula Weight:				305.83

Appearance:					Brown to Dark green or Black powder

Assay:						Minimum 75%

Solubility (0.1% Aq):			Clear blue solution

Absortivity 1% 1cm				> 1500
At Lambda max. 645nm:

Loss on drying at				8%  maximum
110 deg. C (1Hr.)

Effective: 01/28/09