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12-hydroxystearic acid is prepared by the hydrogenation of castor oil, followed by saponification with sodium hydroxide and acidification with hydrochloric acid. [3] This process converts ricinoleate moieties in castor oil triglycerides to 12-hydroxystearate, with stearate as a byproduct from dehydration of the hydroxy acid followed by ...
Of the saturated fatty acids consumed in the United States, stearic acid consumption is second (26% of total saturated fatty acid intake) to palmitic acid (56% of total saturated fatty acid intake). [12] Stearic acid is more abundant in animal fat (up to 33% in beef liver [15]: 739 ) than in vegetable fat (typically less than 5%). [12]
Lithium 12-hydroxystearate and other lithium-based fatty acids are important constituents of lubricating greases. In lithium-based greases, lithium carboxylates are thickeners. "Complex soaps" are also common, these being combinations of more than one acid salt, such as azelaic or acetic acid. [7]
12-Hydroxyeicosatetraenoic acid (12-HETE) is a derivative of the 20 carbon polyunsaturated fatty acid, arachidonic acid, containing a hydroxyl residue at carbon 12 and a 5Z,8Z,10E,14Z cis–trans configuration (Z=cis, E=trans) in its four double bonds.
The C16 and C18 omega hydroxy acids 16-hydroxy palmitic acid and 18-hydroxy stearic acid are key monomers of cutin in the plant cuticle. [1] [2] The polymer cutin is formed by interesterification of omega hydroxy acids and derivatives of them that are substituted in mid-chain, such as 10,16-dihydroxy palmitic acid.
Dodecanoic acid CH 3 (CH 2) 10 COOH C12:0 Tridecylic acid: Tridecanoic acid CH 3 (CH 2) 11 COOH C13:0 Myristic acid: Tetradecanoic acid CH 3 (CH 2) 12 COOH C14:0 Pentadecylic acid: Pentadecanoic acid CH 3 (CH 2) 13 COOH C15:0 Palmitic acid: Hexadecanoic acid CH 3 (CH 2) 14 COOH C16:0 Margaric acid: Heptadecanoic acid CH 3 (CH 2) 15 COOH C17:0 ...