Pararosaniline chloride

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An amorphous form of Rosaniline. The red organic colorant is used for fabric and inks.

Chemical structure

Pararosaniline chloride.jpg

Synonyms and Related Terms

pararosaniline; CI 42500; Basic Red 9; benzenamine, 4- [(4-aminophenyl) (4-imino-2,5-cyclohexadien-1-ylidene) methyl]-, monohydrochloride; para magenta


  • Combustible.
  • Carcinogen. Possible mutagen.
  • Avoid direct contact.
  • ThermoFisher: SDS

Physical and Chemical Properties

Soluble in ethanol. Slightly soluble in water and ether.

Composition HOC(C6H4NH2)3.HCl
CAS 569-61-9
Melting Point 268-270 C(dec)
Molecular Weight mol. wt. = 323.85

Resources and Citations

  • Richard S. Lewis, Hawley's Condensed Chemical Dictionary, Van Nostrand Reinhold, New York, 10th ed., 1993

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