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CAS No 531-53-3 , (7-aminophenothiazin-3-ylidene)-dimethylazanium Search by region : Germany

  • Name: (7-aminophenothiazin-3-ylidene)-dimethylazanium
  • Synonyms: N,N-Dimethylthionine;Dimethylthionine;chloride;(7-aminophenothiazin-3-ylidene)-dimethylazanium; Giemsa solution; Azure A chloride; 531-53-3; Giemsa stain; Azur A;
  • CAS Registry Number:
  • Melting Point: 290 ºC (DEC.)
  • Density: g/cm3
  • Water Solubility: moderate
  • Safety Statements: Poison by intravenous route. Mutation data reported. When heated to decomposition it emits toxic vapors of NOx, SOx, and Cl−.
  • EINECS: 208-510-7
  • Molecular Weight: 291.79906
  • InchiKey: NALREUIWICQLPS-UHFFFAOYSA-N
  • InChI: InChI=1S/C14H13N3S.ClH/c1-17(2)10-4-6-12-14(8-10)18-13-7-9(15)3-5-11(13)
    16-12;/h3-8,15H,1-2H3;1H
  • Risk Statements: S22;S24/25
  • Molecular Formula: C14H14ClN3S
  • Molecular Structure:CAS No:531-53-3 (7-aminophenothiazin-3-ylidene)-dimethylazanium

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531-53-3 Azure A

  • Azure A
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References of (7-aminophenothiazin-3-ylidene)-dimethylazanium
Title: Azure A
CAS Registry Number: 531-53-3
CAS Name: 3-Amino-7-(dimethylamino)phenothiazin-5-ium chloride
Synonyms: 7-(dimethylamino)-3-imino-3H-phenothiazine hydrochloride; 3-amino-7-dimethylaminophenazathionium chloride; asym-dimethyl-3,7-diaminophenazathionium chloride; asym-dimethylthionine chloride; methylene azure A; C.I. 52005
Molecular Formula: C14H14ClN3S
Molecular Weight: 291.80
Percent Composition: C 57.63%, H 4.84%, Cl 12.15%, N 14.40%, S 10.99%
Literature References: One of the main constituents of methylene azure. Prepn: Bernthsen, Ann. 230, 169 (1885); Kehrmann, Ber. 39, 1804 (1906); MacNeal, Killian, J. Am. Chem. Soc. 48, 740 (1926). Review: H. J. Conn's Biological Stains, R. D. Lillie, Ed. (Williams & Wilkins, Baltimore, 9th ed., 1977) pp 420-421, 603. See also: Colour Index vol. 4 (3rd ed., 1971) p 4469.
Properties: Green glistening crystals or dark green powder. Soluble in water (blue soln); sparingly sol in alc. Absorption max: 620-634 nm (3 ml of a soln of 50 mg in 250 ml H2O diluted to 200 ml; read in a Beckman spectrophotometer 1 cm cell).
Absorption maximum: Absorption max: 620-634 nm (3 ml of a soln of 50 mg in 250 ml H2O diluted to 200 ml; read in a Beckman spectrophotometer 1 cm cell)
Use: Biological stain.