Trifluoromethanesulfonic Acid Cf3So2Oh

The following article is from The Great Soviet Encyclopedia (1979). It might be outdated or ideologically biased.

Trifluoromethanesulfonic Acid (Cf3So2Oh)


a colorless liquid that is readily soluble in water. Boiling point, 162°C. Trifluoromethanesulfonic acid is stronger than sulfuric or even perchloric acid. It forms salts and esters (for example, its methyl ester, CF3SO2OCH3, a colorless liquid, has a boiling point of 74°C). It is obtained by the electrochemical fluorination of meth-anesulfonyl chloride, CH3SO2C1 (or methanesulfonyl fluoride), in anhydrous hydrogen fluoride or by the reaction of carbon disulfide with mercuric fluoride:

Several derivatives of trifluoromethanesulfonic acid may be used as herbicides and pharmaceuticals.

The Great Soviet Encyclopedia, 3rd Edition (1970-1979). © 2010 The Gale Group, Inc. All rights reserved.