Method for refining 11-cyano-undecanoic acid

Details Method for refining 11-cyano-undecanoic acid Method for refining 11-cyano-undecanoic acid

C - Chemistry, Metallurgy

07

C

260/534.1

C07C 120/00 (1980.01)

Patent

CA 1044702

METHOD FOR REFINING 11-CYANO-UNDECANOIC ACID ABSTRACT OF THE DISCLOSURE A crude 11-cyano-undecanoic acid in the form of free acid or its ammonium salt is refined by bringing a refining gas containing ozone therein into contact with a solution of the crude 11-cyano-undecanoic acid or its ammonium salt in an organic solvent non-reactive with the ozone at a temperature of 0 to 100°C, for example, formic acid, acetic acid, propionic acid, chloroform, tetrachloromethane, dichlorethane and trichloroethane. -1-

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