Oleic Acid(redirected from cis-9-octadecenoic acid)
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oleic acid[ō′lā·ik ′as·əd]
CH3(CH2)7CH═CH(CH2)7COOH, a monobasic unsaturated carboxylic acid; a colorless, viscous liquid. Boiling point, 225°–226°C at 1.33 kilonewtons per sq m, or 10 mm of mercury; density, 0.825 g/cm3 at 20°C. Nearly all vegetable oils and animal fats contain oleic acid in triglyceride form. Oleic acid is usually prepared from olive oil, in which its content reaches 70–85 percent. Oleic acid esters are used in the preparation of paints and varnishes and the manufacture of cosmetics and oleyl alcohol; the acid itself and certain esters are also used as plasticizers (for example, in the production of rubber). Oleic acid salts and the salts of other higher fatty acids are soaps.