| Identification | Back Directory | [Name]
METHYL GREEN | [CAS]
54327-10-5 | [Synonyms]
CI 42585
PARIS GREEN
CI NO 42590
CI NO 42585
LIGHT GREEN
DOUBLE GREEN
BASIC BLUE 20
DOUBLE GREEN SF
CI BASIC BLUE 20
1%aqueoussolution
Brilliant Blue B
CUPRIC ACETOARSENITE
GLYCEROL /METHYL GREEN
COPPER (II) ACETOARSENITE
PARIS GREEN C.I. NO. 42585
MethylGreen1%AqueousSolution
HEPTAMETHYL-P-ROSANILINE CHLORIDE
METHYL GREEN ZINC CHLORIDE DOUBLE SALT | [Molecular Formula]
C26H33Cl2N3 | [MDL Number]
MFCD00011879 | [MOL File]
54327-10-5.mol | [Molecular Weight]
458.47 |
| Chemical Properties | Back Directory | [Melting point ]
>300°C | [solubility ]
Solubility Soluble in water, ethanol; insoluble in xylene | [form ]
powder | [color ]
Green crystalline | [PH Range]
Yellow (0.1) to greenish-blue (2.3) | [λmax]
635nm, 420nm | [Major Application]
Liquid crystal display device, photography, recording materials, inks, cosmetics, DNA staining, cancer detection |
| Hazard Information | Back Directory | [Definition]
ChEBI: Methyl green is an iminium salt composed of (4-{[4-(dimethylamino)phenyl][4-(trimethylazaniumyl)phenyl]methylidene}cyclohexa-2,5-dien-1-ylidene)(dimethyl)ammonium and chloride ions in a 1:2 ratio. A histological dye used to demonstrate nucleic acids by the Unna-Pappenheim stain, in conjunction with Pyronin Y. It has a role as a fluorochrome and a histological dye. It is an organic chloride salt, an iminium salt and a quaternary ammonium salt. It contains a methyl green(2+). | [Synthesis]
Cupric oxide is heated with 8% acetic acid, As2O3 is added, and the mixture is refluxed for two hours. The product is allowed to cool for half an hour, filtered, washed and dried.Alternate method: Dilute acetic acid is allowed to react with an excess of freshly precipitated Cu(OH)2 and the product is separated by filtration. Dilute acetic acid is added to a solution of As2O3 in boiling NaOH until the color of phenolphthalein disappears. The hot solutions are mixed (mole ratio of CuO:As2O3 = 4:3) and allowed to stand for several days [S. Avery, J. Amer. Chem. Soc. 28, 1159 (1906)]. |
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