Very good results have been obtained from a preparation named "lipanin," which consists of six parts of oleic acid and ninety-four of pure olein.
Artificially it may be prepared by heating cetyl alcohol with soda lime to 270° or by fusing oleic acid with potassium hydrate.
Erucic acid, C 8 H 17 CH: CH [CH2]11 C02H, and the isomeric brassidic acid, belong to the oleic acid series.
Linoleic acid, C18H3202, found as glyceride in drying oils, and ricinoleic acid, C18H33(OH)02, found as glyceride in castor oil, closely resemble oleic acid.
In the mixture of unsaturated fatty acids, by means of some more refined methods, clupanodonic acid, linolenic acid, linolic acid and oleic acid can be recognized.