RICCA Logo

Trichloroacetic Acid



Trichloroacetic Acid
Chemical FormulaCCl3COOH
Formula Weight163.39
Equivalent Weight163.39 (Molar = Normal)
CAS No.76-03-9

Trichloroacetic Acid (TCA) is a much stronger acid than Acetic Acid, from a chemical ionization standpoint, because the electronegative Chlorine atoms draw electron density away from the carboxyl end of the molecule, creating a partial positive charge on the carboxyl group, and allowing easier removal of the positively charged Hydrogen ion, H+. A 0.03 Molar solution of TCA is almost 90% ionized, while a comparable strength of Acetic Acid is less than 3% ionized. The strong electron pull of the Chlorine atoms also gives TCA the undesirable tendency to cleave, producing Chloroform (CHCl3) and Carbon Dioxide (CO2).

NEW! From Ricca

Press Release

Download a Ricca Catalog Today

Click to Download a PDF