sulphonic acid

British

/ sʌlˈfɒnɪk /

noun

any of a large group of strong organic acids that contain the group –SO 2 OH and are used in the manufacture of dyes and drugs

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Example Sentences

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An important nucleus-synthetic reaction is the saponification of nitriles, which may be obtained by the interaction of potassium cyanide with a halogen substitution derivative or a sulphonic acid.

From The Project Gutenberg Encyclopedia Volume 1 of 28 by Project Gutenberg

The sulphonic acid was prepared by heating guaiacol with concentrated sulphuric acid, the resulting water-soluble product possessing a light, brownish-green colour.

From Synthetic Tannins by Grasser, Georg

The presence of Neradol D, the main constituent of which is dicresylmethanedisulphonic acid, renders it impossible by such methods to determine whether the combined sulphur owes its origin to sulphuric or sulphonic acid.

From Synthetic Tannins by Grasser, Georg

This effect is still more pronounced when the absolute amount of free sulphonic acid is diminished.

From Synthetic Tannins by Grasser, Georg

Employing 1, respectively 2, molecules of sulphonic acid, the reactions take place according to:—

From Synthetic Tannins by Grasser, Georg

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