COA Center




C.I.No.42555 (Confirms USP Specification) Crystal Violet is a component of Gram staining that allows one to recognize the difference between gram-positive and gram-negative bacteria with differential staining.
Basic Violet 3, Gentian Violet, Hexamethylpararosaniline chloride, Methyl Violet 10B


25 g (00025)

100 g (00100)

1PB1200060 1PB1200200
Article No. 03049 Grade AR
Purity 96% CAS No. 548-62-9
Molecular Formula C25H30CIN3 Molecular Weight 407.99
H.S. Code 3204.9000 Shelf Life 60 Months

Physical Properties

Physical state at 20 °C Solid Colour Dark green powder
Odour Slight characteristic odor Melting point/ Freezing point [°C] 173 °C
Solubility in water [% weight] Soluble in water


Appearance Dark green powder Assay 96 – 100.5%
Identification To pass A, B & C tests Water (H2O) Max 7.5%
Residue on ignition Max 1.5% Alcohol insoluble matter Max 1%
Arsenic (As) Max 0.001% Lead (Pb) Max 0.003%
Zinc (Zn) Passes test Chromatographic purity (by HPLC) Passes test
Sensitivity as an indicator Passes test UV absorbance Ratio 0.98 - 1.90

Safety Information and Hazard Symbols

Corrosion Exclamation Mark Environment Health Hazard
Symbol: GHS05, GHS07, GHS08, GHS09
Signal Word: Danger
UN No.: 3077
IMCO Class No.: 9
Packing Group: III
Hazardous Statement: H302-H318-H351-H410
Precaution Statement: P273-P280-P305 + P351 + P338-P501
Revision Date: 28-Feb-2019

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