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 Trichloroacetic acid M882485


CASRN: 76-03-9

Formula: C2-H-Cl3-O2

Synonyms/Common Names

  • TCA
  • Trichloracetic acid
  • Trichloroethanoic acid

Known Uses

Microscopy decalcifier, fixative, cauterizing agent used to dissolve keratin in aphthous stomatitis, intermediate for herbicides, astringent, antiseptic (HSDB 1990). Disinfection by-product formed by the chlorination of natural organic matter

Chemical Properties

Toxicity Effects (HSDB)

Genetic Toxicology

  • Salmonella  (A37135)  Completed 
    •  Negative