National Toxicology Program

National Toxicology Program

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)

Nomination Background

Genetic Toxicology

  • Salmonella  (A37135)  Completed 
    •  Negative 
NTP is located at the National Institute of Environmental Health Sciences, part of the National Institutes of Health.