Skip to Main Navigation
Skip to Page Content
U.S. flag

An official website of the United States government

Dot gov

The .gov means it's official.
Federal government websites often end in .gov or .mil. Before sharing sensitive information, make sure you're on a federal government site.


The site is secure.
The https:// ensures that you are connecting to the official website and that any information you provide is encrypted and transmitted securely.

Testing Status of ((o-Carboxyphenyl)thio)ethylmercury sodium salt M200004


CASRN: 54-64-8

Formula: C9-H9-Hg-O2-S.Na

Synonyms/Common Names

  • Mercurate(1-), ethyl(2-mercaptobenzoato(2-)-O,S)-, sodium
  • Merthiolate
  • Sodium ethylmercurithiosalicylate
  • Thimerasol
  • Thimerosal
  • Thiomerosal
  • Thiomersal

Special Studies

  • C. elegans  (S0961)  Completed 
    • C. elegans

Genetic Toxicology

  • Salmonella  (489431)  Completed 
    • Citation: Zeiger E, Anderson B, Haworth S, Lawlor T, Mortelmans K, Speck W. Salmonella mutagenicity tests: III. Results from the testing of 255 chemicals. Environ Mutagen. 1987;9 Suppl 9:1-109.
    •  Negative