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Hexadecyl hexadecanoate, also known as cetyl palmitate, is the ester derived from hexadecanoic acid and 1-hexadecanol. This white waxy solid is the primary constituent of spermaceti, the once highly prized wax found in the skull of sperm whales. [2] Cetyl palmitate is a component of some solid lipid nanoparticles.
It is composed mostly of wax esters (chiefly cetyl palmitate) and a smaller proportion of triglycerides. [9] Unlike other toothed whales, most of the carbon chains in the wax esters are relatively long (C 10 −C 22). [4] The blubber oil of the whale is about 66% wax. [4] When it cools to 30 °C or below, the waxes begin to solidify. [10]
Spermaceti is a liquid wax, composed mostly of wax esters (chiefly cetyl palmitate) and a smaller proportion of triglycerides, [17] with oleic acid being the most common fatty acid. The proportion of wax esters in the spermaceti organ increases with the age of the whale: 38-51% in calves, 58-87% in adult females, and 71-94% in adult males.
A major component of beeswax is myricyl palmitate which is an ester of triacontanol and palmitic acid. Its melting point is 62–65 °C (144–149 °F). Spermaceti occurs in large amounts in the head oil of the sperm whale. One of its main constituents is cetyl palmitate, another ester of a fatty acid and a fatty alcohol.
Triacontanyl palmitate, a typical wax ester, is derived from triacontanyl alcohol and palmitic acid.. A wax ester (WE) is an ester of a fatty acid and a fatty alcohol.Wax esters are the main components of three commercially important waxes: carnauba wax, candelilla wax, and beeswax.
Cetyl alcohol / ˈ s iː t əl /, also known as hexadecan-1-ol and palmityl alcohol, is a C-16 fatty alcohol with the formula CH 3 (CH 2) 15 OH. At room temperature, cetyl alcohol takes the form of a waxy white solid or flakes. The name cetyl refers to whale oil (cetacea oil, from Latin: cetus, lit. 'whale', from Ancient Greek: κῆτος ...
These applications use sodium palmitate, which is commonly obtained by saponification of palm oil. To this end, palm oil, rendered from palm trees (species Elaeis guineensis ), is treated with sodium hydroxide (in the form of caustic soda or lye), which causes hydrolysis of the ester groups, yielding glycerol and sodium palmitate.
Cetyl palmitate, or Hexadecyl hexadecanoate; Lacceroic acid This page was last edited on 21 January 2023, at 16:22 (UTC). Text is available under the Creative ...