National Toxicology Program

National Toxicology Program

Nomination Summary for C.I. Pigment red 23 (N79445)

C.I. Pigment red 23

Specific Substances: C.I. Pigment Red 23

Nomination Date: 07/00/1979

Nominator: NCI

Rationale: Significant usage, suspicion of carcinogenicity on basis metabolite produced by reduction of azo linkage

NTP Principles: Pre 1993 - 3, 8

Status: Unknown

Agents and Status

The following information relates to the specific agent and may include history from earlier or later nominations for this same agent.

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CASRN: 6471-49-4

Agent Name: C.I. Pigment Red 23

NTP is located at the National Institute of Environmental Health Sciences, part of the National Institutes of Health.