National Toxicology Program

National Toxicology Program

Nomination Summary for Hexavalent chromium (N20110)

Hexavalent chromium

Specific Substances: Hexavalent chromium ion, Sodium dichromate dihydrate (VI)

Nomination Date: 02/15/2001

Nominator: California EPA

Rationale: Hexavalent chromium's nomination is based on: 1) the scientific uncertainty whether hexavalent chromium is carcinogenic by the oral route, 2) the detection of hexavalent chromium in many California drinking water sources, and 3) the limited animal and human carcinogenicity data available.

NTP Principles: not specified

Status: Selected

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: 18540-29-9

Agent Name: Hexavalent chromium ion

  • No studies are available.

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CASRN: 7789-12-0

Agent Name: Sodium dichromate dihydrate (VI)

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