National Toxicology Program

National Toxicology Program

Nomination Summary for Thimerosal (N20104)


Specific Substances: ((o-Carboxyphenyl)thio)ethylmercury sodium salt

Nomination Date: 10/00/2000

Nominator: FDA

Rationale: Organomercurial preservative widely used in vaccines and other therapeutics; large exposed population; insufficient toxicity data

NTP Principles: 2, 3

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: 54-64-8

Agent Name: ((o-Carboxyphenyl)thio)ethylmercury sodium salt

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