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Lanolin (from Latin lāna 'wool', and oleum 'oil'), also called wool fat, wool yolk, wool wax, sheep grease, sheep yolk, or wool grease, is a wax secreted by the sebaceous glands of wool -bearing animals. [ 1 ] Lanolin used by humans comes from domestic sheep breeds that are raised specifically for their wool.
Saponification. Saponification is a process of cleaving esters into carboxylate salts and alcohols by the action of aqueous alkali. Typically aqueous sodium hydroxide solutions are used. [ 1 ][ 2 ] It is an important type of alkaline hydrolysis. When the carboxylate is long chain, its salt is called a soap.
CH 3 (CH 2) 34 COOH. C36:0. Heptatriacontylic acid. Heptatriacontanoic acid. CH 3 (CH 2) 35 COOH. C37:0. Octatriacontylic acid. Octatriacontanoic acid. CH 3 (CH 2) 36 COOH.
Saponification value or saponification number (SV or SN) represents the number of milligrams of potassium hydroxide (KOH) or sodium hydroxide (NaOH) required to saponify one gram of fat under the conditions specified. [ 1 ][ 2 ][ 3 ] It is a measure of the average molecular weight (or chain length) of all the fatty acids present in the sample ...
Linoleic acid is a component of quick- drying oils, which are useful in oil paints and varnishes. These applications exploit the lability of the doubly allylic C−H groups (−CH=CH−CH2−CH=CH−) toward oxygen in air (autoxidation). Addition of oxygen leads to crosslinking and formation of a stable film.
In organic chemistry, ethoxylation is a chemical reaction in which ethylene oxide (C2H4O) adds to a substrate. It is the most widely practiced alkoxylation, which involves the addition of epoxides to substrates. In the usual application, alcohols and phenols are converted into R (OC2H4)nOH, where n ranges from 1 to 10.
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Cholecalciferol is a form of vitamin D which is naturally synthesized in skin and functions as a pro-hormone, being converted to calcitriol. This is important for maintaining calcium levels and promoting bone health and development. [ 4 ] As a medication, cholecalciferol may be taken as a dietary supplement to prevent or to treat vitamin D ...
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