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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.
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 ...
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.
Polar molecules must contain one or more polar bonds due to a difference in electronegativity between the bonded atoms. Molecules containing polar bonds have no molecular polarity if the bond dipoles cancel each other out by symmetry. Polar molecules interact through dipole-dipole intermolecular forces and hydrogen bonds.
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]
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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.
Most fatty alcohols in nature are found as waxes, which are esters of fatty acids and fatty alcohols. [1] They are produced by bacteria, plants and animals for purposes of buoyancy, as source of metabolic water and energy, biosonar lenses (marine mammals) and for thermal insulation in the form of waxes (in plants and insects). [3]