Oleic acid is a monounsaturated omega-9 fatty acid found in various animal and vegetable sources. It has the formula C₁₈H₃₄O₂ (or CH₃(CH₂)₇CH=CH(CH₂)₇COOH). Its IUPAC name is cis-9-octadecenoic acid, and its lipid shorthand name is 18:1 cis-9. The saturated form of this acid is stearic acid. It is used in Lorenzo's oil.

Oleic acid comprises 55-80% of olive oil, though there may be only 0.5-2.5% or so as actual free acid, and 15-20% of grape seed oil.

Reduction of oleic acid yields oleyl alcohol.

Physical data

Appearance: Pale yellow or brownish yellow oily liquid with lard-like odor

Solubility: Insoluble in water

Melting Point: 13-14°C

Boiling Point: 194-195°C

Density: 0.895-.947 g/cm³

Reference

Additional reference:

1. Bishop, Paul L. (2000). Pollution Prevention: Chapter 2 - Properties and Fates of Environmental Contaminants, instructional slides to accompany Pollution Prevention:Fundamentals and Practice, by Paul L. Bishop (ISBN 0073661473). Retrieved 2005-03-07.

Fatty acids | Carboxylic acids

Олеинова киселина | Kyselina olejová | Ölsäure | Ácido oleico | Acide oléique | 올레산 | Asam oleat | Oliezuur | オレイン酸 | Kwas oleinowy | Олеиновая кислота