National Toxicology Program

National Toxicology Program

Nomination Summary for Toxaphene isomers (N20008)

Toxaphene isomers

Specific Substances: Toxaphene isomers

Nomination Date: 10/27/1999

Nominator: Private Individual

Rationale: P-26 and P-50 have been identified as the two most abundant toxaphene isomers in human blood. Although now banned in the US, they were once used as pesticides and have a high potential for bioaccumulation across the food chain and long range transportation. Technical toxaphene is mutagenic and there is some animal data suggesting that it is carcinogenic. Neurobehavioral effects have also been reported in developmental toxicity studies performed in rats.

NTP Principles: not specified

Status: No Testing

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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Agent Name: Toxaphene isomers

  • No studies are available.
NTP is located at the National Institute of Environmental Health Sciences, part of the National Institutes of Health.