Auramine O

  • 4,4 ' -bis ( dimethylamino) - benzophenonimid hydrochloride
  • C. I. 41000
  • CI Solvent Yellow 34
  • Basic Yellow 2
  • Pyoktanin
  • 2465-27-2
  • 492-80-8 ( auramine -Base)

Yellow needles

Fixed

126 ° C.

265 ° C ( decomposition)

  • Soluble in water: 10 g · l-1 (20 ° C)
  • Soluble in acetone and ethanol

Risk

1000 mg · kg -1 ( LD50, mouse, oral)

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Auramine O is a dye from the group of diphenylmethane, which is used in the auramine - rhodamine stain and for the dyeing of paper, textiles and leather. It is the hydrochloride of auramine base.

Auramine O in aqueous solution

Representation and extraction

Can auramine by reaction of Michler's base are ( '-bis ( dimethylaminodiphenyl ) methane 4,4 ) with urea, sulfamic acid, sulfur and ammonia obtained at 175 ° C. Another method is the condensation of N, N- dimethyl aniline with formaldehyde and subsequent reaction with sulfur, ammonia and ammonium chloride.

CAS registry number PubChem Dangerous Substances Directive (67/548/EEC)
89303
de