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Substance Name: C.I. Pigment Orange 20
RN: 12656-57-4


  • TSCA Definition 2018: This substance is identified in the COLOUR INDEX by Colour Index Constitution Number, C.I. 77202.

Molecular Formula

  • Unspecified

Classification Code

  • TSCA Flag SP (Substance is Identified in a Proposed Significant New Use Rule)
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Links to Resources

NLM Resources (File Locators)

Regulatory Agencies (Superlist Locators)

Other Resources (Internet Locators)

Names and Synonyms


  • EINECS 235-758-3

Systematic Name

  • C.I. Pigment Orange 20

Superlist Name

  • C.I. Pigment Orange 20

Registry Numbers

CAS Registry Number

  • 12656-57-4

System Generated Number

  • 0012656574