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Rudolf Sommer
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Organic Low-Molecular-Weight Compounds And Preparation Thereof
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Abstract
11,058. Sommer, R. May 26. Anhydrides of organic acids are produced by treating their dedydrated salts with silicon tetrafluoride. In an example, silicon tetrafluoride, obtained by heating together sand, fluorspar, and sulphuric acid, is treated with a hot mixture of sand and sulphuric acid, and is then passed through several vessels containing hot dry sodium acetate. Acetic anhydride distils over. The residue is treated with sand and sulphuric acid, and the silicon tetrafluoride so obtained is passed into hot dry potassium benzoate. The benzoic anhydride so produced is extracted with benzene.
GB190511058D1905-05-261905-05-26Improvements in the Production of Anhydrides of the Organic Acids.
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