Trichloroacetic acid

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White, deliquescent crystals precipitate proteins and is used as a reagent for the detection of Albumin. Trichloroacetic acid is used in the manufacture of pharmaceuticals and herbicides.

Chemical structure

Trichloroacetic acid.jpg

Synonyms and Related Terms



  • Toxic by ingestion and inhalation.
  • Highly corrosive on contact.
  • Decomposes to form chloroform, hydrochloric acid, carbon dioxide, carbon monoxide.
  • ThermoFisher: SDS

Physical and Chemical Properties

  • Soluble in water, ethanol, ether.
  • pH = 1.2 (for 0.1 M solution).
Composition CCl3COOH
CAS 76-03-9
Melting Point 57-58 C
Density 1.6298 g/ml
Molecular Weight mol. wt. = 163.39
Boiling Point 196-197 C

Resources and Citations

  • Richard S. Lewis, Hawley's Condensed Chemical Dictionary, Van Nostrand Reinhold, New York, 10th ed., 1993
  • Random House, Webster's Encyclopedic Unabridged Dictionary of the English Language, Grammercy Book, New York, 1997
  • The Merck Index, Martha Windholz (ed.), Merck Research Labs, Rahway NJ, 10th edition, 1983 Comment: entry 9756

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