Crystal violet, Sigma-Aldrich®

Supplier: SIGMA-ALDRICH MICROSCOPY
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Synonyms: Methylrosanilide chloride, Basic violet 3, Viocid, N-(4-(Bis(4-(dimethylamino)phenyl)methylene)cyclohexa-2,5-dien-1-ylidene)-N-methylmethanamonium chloride, Violet crystal, Methyl violet 10B, Dimethyl((di(4-(dimethylamino)phenyl)methylen)-2,5-cyclohexadien-1-ylidene)ammonium chloride, CI 42555, 4-[4,4'-Bis(dimethylamino) benzhydrylidene]cyclohexa-2,5-dien-1-ylidene]dimethylammonium chloride, Hexamethyl violet, Hexamethyl-p-rosaniline chloride, Vianin, Gentian violet

48770-100G 48770-25G 48770-500G
48770-100GEA 74.1 GBP
48770-100G 48770-25G 48770-500G
Crystal violet, Sigma-Aldrich®
Crystal Violet

Mixture of crystal violet [C.I.No. 42555] and methyl violet [C.I.No. 42535]. Dye employed for preparing Gram stain.

Formula: C₂₅H₃₀ClN₃
MW: 407.99 g/mol
Melting Pt: 189…194 °C
Density: 1,19 g/cm³ (20 °C)
Storage Temperature: Room Temperature
MDL Number: MFCD00011750
CAS Number: 548-62-9
EINECS: 208-953-6
UN: 3077
ADR: 9,III
Merck Index: 13,04406
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Specification Test Results

Appearance (colour) Green to very dark green
Appearance (form) Powder
Thin layer chromatogr. Corresponds to standard
Solubility (colour) 0.01 g in 10 ml methanol
Solubility (method) 0.01 g in 10 ml methanol
Loss on drying ≤10%
Wavelength (1) (UV) 580 - 595 nm
Extinction (1%/1 cm) (1) (UV) ≥1300
Solvent (UV) Water

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