CRYSTAL VIOLET AR

CRYSTAL VIOLET AR 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 MSDS DE EN FR KO PT ES TH TR COAs Packings 25 g (00025) 100 g (00100) Print friendly version Article No. 03049 Grade AR Purity 96% CAS No. 548-62-9 Molecular Formula C 2 5 H 3 0 CIN 3 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 Specifications Appearance Dark green powder Assay 96 – 100.5% Identification To pass A, B & C tests Water 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 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 Home Lab Chemicals Biological Stains and Dyes CRYSTAL VIOLET