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Substance Name: C.I. Pigment Red 233
RN: 68187-12-2


  • TSCA Definition 2018: An inorganic pigment that is the reaction product of high temperature calcination in which calcium oxide, chromium (III) oxide, silicon oxide, and tin (IV) oxide in varying amounts are homogeneously and ionically interdiffused to form a crystalline matrix of sphene. Its composition may include PbO as a modifier. This substance is identified in the COLOUR INDEX by Colour Index Constitution Number, C.I. 77301.

Molecular Formula

  • Unspecified
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Names and Synonyms


  • Chrome tin pink sphene
  • EC 269-073-6
  • EINECS 269-073-6

Systematic Names

  • C.I. Pigment Red 233
  • Chrome tin pink sphene

Registry Numbers

CAS Registry Number

  • 68187-12-2

System Generated Number

  • 0068187122