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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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Cetyl alcohol (1-hexadecanol) 16 carbon atoms: C 16 H 34 O Palmitoleyl alcohol (cis-9-hexadecen-1-ol) 16 carbon atoms: unsaturated: C 16 H 32 O Heptadecyl alcohol (1-n-heptadecanol, heptadecanol) 17 carbon atoms: C 17 H 36 O Stearyl alcohol (1-octadecanol) 18 carbon atoms: C 18 H 38 O Oleyl alcohol (1-octadecenol) 18 carbon atoms: unsaturated ...