Preparation of isethionic acid
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United States of America Patent
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Feb 12, 1985
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N/A
app pub date -
Sep 7, 1982
filing date -
Sep 7, 1982
priority date (Note) -
Expired
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Abstract
A method for the preparation of isethionic acid by treating an alkali metal isethionate with hydrochloric acid to form isethionic acid and a chloride salt. The chloride salt is removed so as to provide at least a 50% by weight aqueous solution of the isethionic acid after removal of excess hydrochloric acid, which solution may be further reacted with a polyvalent metal oxide, hydroxide or amine to form the corresponding heavy metal isethionate. Zinc isethionate, for instance, is useful as a catalyst for making acyl isethionates used in making soap bars.
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