sulphonation

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sulphonation

in chemistry, any of several methods by which sulfonic acids are prepared. Important sulfonation procedures include the reaction of aromatic hydrocarbons with sulfuric acid, sulfur trioxide, or chlorosulfuric acid; the reaction of organic halogen compounds with inorganic sulfites; and the oxidation of certain classes of organic sulfur compounds, particularly thiols or disulfides.

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Encyclopedia Britannica, 2008. Encyclopedia Britannica Online.
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