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Nomination Summary for Thimerosal (N20104)

Nominated 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


Agents and Status

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


CASRN: 54-64-8

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