5652. Magenta I

Nomenclature

CAS number: 632-99-5
4-[(4-Aminophenyl)(4-imino-2,5-cyclohexadien-1-ylidene)methyl]-2-methylbenzenamine monohydrochloride; C.I. Basic Violet 14; α4-(p-aminophenyl)-α4-(4-imino-2,5-cyclohexadien-1-ylidene)-2,4-xylidine hydrochloride; 2-methyl-4,4′-[(4-imino-2,5-cyclohexadien-1-ylidene)methylene]dianiline hydrochloride; fuchsine; magenta; rosaniline hydrochloride; C.I. 42510.
C20H20ClN3; mol wt 337.85.
C 71.10%, H 5.97%, Cl 10.49%, N 12.44%.

Description and references

Prepn: Fischer, Fischer, Ann. 194, 276, 290 (1878); Ber. 13, 2204 (1880); J. T. Scalan, J. Am. Chem. Soc. 57, 887 (1935). Evaluation of carcinogenicity studies: IARC Monographs 4, 57 (1974). See also: Colour Index vol. 4 (3rd ed., 1971) p 4389.

Chemical structure

Properties

Metallic green, lustrous crystals, dec above 200°. Absorption max (ethanol): 543 nm (ε 93000). 2.65 parts dissolve in 1000 parts water. Practically insol in ether. Sol in alcohol with a carmine red color.

Use

As a dye or in manuf of other dyes.

Therapeutic Category

Antifungal.

Keywords

Antiseptic/Disinfectant; Dyes