Oleic acid is a monounsaturated Omega-9 fatty acid that exists in animals and plants. Pure oleic acid is a colorless oil-like liquid, there is animal oil or vegetable oils odor, long place in the air gradually darker color, industrial products for yellow to red oil-like liquid, lard odor. Soluble in ethanol, ether, chloroform and other organic solvents, a yeke ngangu pëpe ti sara kua na ni na yâ ti ngu–{5}} a yeke ngangu pëpe ti sara si a-alcali ni aga saponification, coagulation ni aga vuru soli so ayeke ngangu pëpe. A yeke ngangu pëpe ti sara si a-oxyde, ti agrégate, wala ti décomposé na gbe ti kota fièvre{8} .