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Substance Name: C.I. Pigment Black 23
RN: 68187-54-2


  • TSCA Definition 2018: An inorganic pigment that is the reaction product of high temperature calcination in which antimony oxide and tin (IV) oxide in varying amounts are homogeneously and ionically interdiffused to form a crystalline matrix of cassiterite. Its composition may include any one or a combination of the modifiers MnO, SiO2, TiO2, or V2O5. This substance is identified in the COLOUR INDEX by Colour Index Constitution Number, C.I. 77865.

Molecular Formula

  • Unspecified
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Names and Synonyms


  • EINECS 269-105-9
  • Tin antimony gray cassiterite
  • Tin antimony grey cassiterite

Systematic Name

  • C.I. Pigment Black 23

Registry Numbers

CAS Registry Number

  • 68187-54-2

System Generated Number

  • 0068187542