Dinitroaniline orange

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An azo-type organic colorant prepared by combining beta naphthol with 2,4-dinitroaniline. Dinitroaniline orange was first patented in 1909. It has good resistance to fading but may darken with time. Dinitroaniline orange is used for textile printing, architectural paints, plastic, printing inks and some artists' paints.

Synonyms and Related Terms

Pigment Orange 3; Orthonitroaniline orange; CAS No. 6410-15-7


  • May bleed in paint solvents.
  • Guide Chem: SDS

Physical and Chemical Properties

Resistant to alkalis.

Resources and Citations

  • B.Berrie, S.Q.Lomax, "Azo Pigments: Their History, Synthesis, Properties and Use in Artists' Materials" in Studies in the History of Art, No.57, National Gallery of Art, Washington DC, 1997.
  • Guy Weismantel, Paint Handbook, McGraw-Hill Book Company, New York, 1981