Description:
<jats:title>Abstract</jats:title><jats:p>Phase‐transfer catalyzed biphasic epoxidation of a series of fats and oils with ethylmethyldioxirane in 2‐butanone was conducted. The series of glycerides studied varied from monounsaturated (olive) to highly polyunsaturated (flaxseed) oils. Best conversions for polyunsaturate‐containing oils were obtained with a molar ratio of 2.5:1 (oxidant/oil) with two‐step addition of oxidant. Conversion to epoxides was monitored by gas‐liquid chromatography, and oxirane content was determined by titration. The effect of phase‐transfer catalyst or solvent used for the epoxidation reaction also was investigated.</jats:p>