English name: Methyl violet; Dahlia B; Basic violet 1; Pyrokatanium blue; CI42535
Other names: Methyl Qinglian; Basic Violet 1; Methyl Violet 2B; Aniline Violet; Basic Violet 1; Nail Violet
CAS number: 8004-87-3
C24H28ClN3 = 393.95
Level: BS
Biological staining test: qualified
pH color change range: pH 0.13 (yellow) ~ 0.5 (green); pH 1.0 (green) ~ 1.5 (blue); pH 2.0 (blue) ~ 3.2 (purple)
Properties: Green shiny crystalline powder. It is a mixture of tetramethyl, pentamethyl, and hexamethyl derivatives of by-product red base, of which pentamethyl derivatives are the main (molecular formula, molecular weight refers to such derivatives). Soluble in water and ethanol, it is a purple solution, soluble in glycerin and chloroform, almost insoluble in ether. Melting point 137 ° C (decomposition). The maximum absorption wavelength is 584nm. Toxic, LD50 (mice, oral) 105mg
Uses: biochemical research. Photometric determination of zinc, cadmium, mercury, antimony, thallium, gold, etc. and precipitation of zinc, cadmium and antimony. Acid-base indicator, biological stain storage: RT, protected from light
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