F. Behr, T. Kestner
Sep 1, 1982
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Abstract
Abstract Numerous examples of anhydrous mono and difunctional fluorochemical acids have been prepared. Anhydrous perfluoroalkanedisulfonic acids and mixed carboxylic-sulfonic acids can be conveniently prepared by the stoichiometric addition of water to the respective cyclic acid anhydride of the type Acidity studies were conducted using the proton NMR technique to determine the absolute pKa values. The acidity of anhydrous F-ethane 1,2-disulfonic acid is within the same order of magnitude as trifluoromethane sulfonic acid.