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

CRYSTAL VIOLET CERTIFIED

Synonyms:					Basic Violet 3; C.I. 42555;
Hexamethylpararosaniline Chloride;
Gentian Violet

CAS No:					548-62-9

Chemical Formula:				C25H30CIN3

Formula Weight:				407.99

Description:					Dark Green Crystals/Powder

Assay (on anhydrous basis):		96.0 % - 100.5%

Assay (as is):					> 88%

Lambda max.:				589 – 594 nm
Ratio of absorbances:			0.98 – 1.20

Loss on Drying 105 Deg.C/1hr:		< 7.5 %

Residue on Ignition:			<1.5%

Sensitivity as indicator:			To pass Test

Visual Transition Interval:		From pH 0.0 (yellow) To pH 2.0 (violet)

Lead (Pb):					0.003% maximum

Zinc (Zn):					0.050% maximum

Alcohol-insoluble substances:		<1.0%

Effective: 01/26/09