Hansa orange

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Originally a Hoechst AG trademark for a line of bright, transparent orange synthetic organic pigments. Hansa orange dyes are composed of dinitro- or ortho- aniline. This class of dye was first discovered in 1907 by R. Lauch.

See also Hansa.

Synonyms and Related Terms

Pigment Orange 1, 2 and 5; CI Nos. 11725, 12060 and 12075

Hazards and Safety

CI Pigment Orange 5 is a suspected carcinogen, mutagen and may contain toxic impurities.

Sources Checked for Data in Record

  • Monona Rossol, The Artist's Complete Health and Safety Guide, Allworth Press, New York, 1994
  • Colour Index International online at www.colour-index.org