Oleic Acid Unsaturated organic compound corresponding to the formula CO17H33COOH. It is one of the most interesting unsaturated acids and, in the form of its naturally occurring glyceride, is the main ingredient of animal and vegetable fats. It is contained in olive oil, coconut, almonds, flax seeds, pig fat, and bovine fat. Vegetable fats appear only in its cis form, while the transform (elaidic acid) is obtained by heating the cis form at 180 ° -200 °C in the presence of selenium. It is made from its salts and mainly from the salts of lead and lithium, after being cleaned. It is also prepared by hydrolyzing the glycerides containing it together with other acids from which it is separated by crystallization at low temperatures. Oleic acid is found in oils and fats in the form of glyceryl esters. It is obtained by basic-hydrolysis of Olive Oil.
Oleic Acid Properties.
Oleic acid is a colorless liquid, mp 16°C, bp 286°C. It is insoluble in water but dissolves in ethanol and ether. It gives the reaction of alkenes and carboxylic acids. Oleic acid reacts with ozone to form the corresponding ozonide. The ozonide on treatment with zinc and water decomposes to yield two aldehydes.
This reaction shows that the position of the double bond in oleic acid is between C-9 and C-10.
Oleic Acid Uses.
Oleic acid is used in the manufacture of soaps, lubricants, and synthetic detergents.