sulphonate

British  

/ ˈsʌlfəˌneɪt /

noun

1. a salt or ester of any sulphonic acid containing the ion RSO 2 O ^– or the group RSO 2 O–, R being an organic group

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verb

1. (tr) to introduce a sulphonic acid group, –SO 2 OH, into (a molecule)

Example Sentences

A thiophenol, C6H5SH, is known, and is prepared by the action of phosphorus pentasulphide on phenol, or by distilling a mixture of sodium benzene sulphonate and potassium sulphydrate.

From Encyclopaedia Britannica, 11th Edition, Volume 5, Slice 3 "Capefigue" to "Carneades" by Various

By reaction with sodium sulphite it is converted into a hydroquinone sulphonate of deep purple colour.

From Encyclopaedia Britannica, 11th Edition, Volume 5, Slice 5 "Cat" to "Celt" by Various

Phthalic acid also is difficult to sulphonate: the sulphonated compound treated with formaldehyde gives only water-insoluble condensation products.

From Synthetic Tannins by Grasser, Georg