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process to separate aqueous solutions of acids, carboxylic acids perfluoralcane - 1 (carbonaceous chain 12 carbon atoms
process to separate aqueous solutions of acids, carboxylic acids perfluoralcane - 1 (carbonaceous chain 12 carbon atoms
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机译:分离酸,羧酸全氟烷的水溶液的方法-1(碳链12个碳原子
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摘要
Perfluoro alkene carboxylic acids are sepd. from aq. soln. by extracting K salt from conc. aq. soln. using an organic solvent which is (partially) water-miscible. Acid salts are very water-soluble and easily contaminated with inorganic salts if aq. soln. is evaporated. Extn. or distn. of free acid causes corrosion. Method gives high purity, yields. Solvent is pref. 3-5C alcohol, esp. isopropanol, 3-7C ketone, dimethyl formamide or sulphoxide.
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