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Encyclopedia > Oleate
Oleic acid
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Oleic acid
Oleic acid in 3D
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Oleic acid in 3D

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[1]). 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. In nutrition, monounsaturated fats are dietary fats with one double-bonded carbon in the molecule, with all of the others single-bonded carbons. ... Omega-9 fatty acids are a class of unsaturated fatty acids which have a C=C double bond in the ω-9 position. ... In chemistry, especially biochemistry, a fatty acid is a carboxylic acid (or organic acid), often with a long aliphatic tail (long chains), either saturated or unsaturated. ... The International Union of Pure and Applied Chemistry (IUPAC) is an international non-governmental organization devoted to the advancement of chemistry. ... Stearic acid also called octadecanoic acid is one of the many useful types of saturated fatty acids that comes from many animal and vegetable fats and oils. ... Lorenzos Oil is a 1992 dramatic film directed by George Miller. ...


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. A bottle of olive oil. ... Grape oil (also grapeseed oil) is a vegetable oil pressed from the seeds of various varieties of Vitis vinifera grapes, an abundant by-product of wine making. ...


Reduction of oleic acid yields oleyl alcohol. Oleyl alcohol is an alcohol coming from inedible beef fat, chemical formula C18H36O. It is an non-ionic, unsaturated fatty 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

Variation in the physical appearance of humans is believed by anthropologists to be an important factor in the development of personality and social relations in particular physical attractiveness. ... A substance is soluble in a fluid if it dissolves in that fluid. ... The melting point of a solid is the temperature at which it changes state from solid to liquid. ... The boiling point of a substance is the temperature at which it can change its state from a liquid to a gas throughout the bulk of the liquid at a given pressure. ... Density (symbol: ρ - Greek: rho) is a measure of mass per unit of volume. ...

Reference

General reference: NIST Chemistry Webbook


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.

  Results from FactBites:
 
Ligand-Dependent Conformational Equilibria of Serum Albumin Revealed by Tryptophan Fluorescence Quenching -- Chadborn ... (4758 words)
Oleate (2.5 µl of 90 mM) in ethanol was added, and fluorescence was measured at 345 nm (excitation 295 nm) at 1-min intervals for 1 h.
This was repeated for HSA incubated with 9:1 oleate.
that oleate is bound, the quenching constant is unchanged.
Ethanolamine Oleate Advanced Consumer Drug Information (1506 words)
Esophageal varices, bleeding (treatment)—Ethanolamine oleate is indicated in the treatment of bleeding esophageal varices, and the prevention of recurrent bleeding in patients whose varices have recently bled.
Ethanolamine oleate is not indicated for the prophylactic treatment of esophageal varices that have not bled.
Injection of ethanolamine oleate causes an acute, dose-related inflammatory reaction of the intimal endothelium of the vein.
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