Cetyl alcohol

Cetyl alcohol
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IUPAC name	1-Hexadecanol
Other names	Cetanol, Cetyl alcohol, Ethal, Ethol, Hexadecanol, Hexadecyl alcohol, Palmityl alcohol
Identifiers
CAS number	36653-82-4
SMILES	CCCCCCCCCCCCCCCCO
Properties
Molecular formula	CH3(CH2)15</sub>OH
Molar mass	242.44 g/mol
Density	0.819 g/cm³
Melting point	56 °C, 329 K, 133 °F
Boiling point	189 °C, 462 K, 372 °F
Except where noted otherwise, data are given for materials in their standard state (at 25 °C, 100 kPa) Infobox disclaimer and references

Cetyl alcohol, also known as 1-hexadecanol and palmityl alcohol, is a solid organic compound and a member of the alcohol class of compounds. Its chemical formula is CH₃(CH₂)₁₅OH. At room temperature, cetyl alcohol takes the form of a waxy white solid or flakes. It belongs to the group of fatty alcohols.

The name cetyl derives from the whale oil (Latin: cetus) from which it was first isolated.

History

Cetyl alcohol was discovered in 1817 by the French chemist Michel Chevreul when he heated spermaceti, a waxy substance obtained from sperm whale oil, with caustic potash (potassium hydroxide). Flakes of cetyl alcohol were left behind on cooling.

Production

With the demise of commercial whaling, cetyl alcohol is no longer primarily produced from whale oil, but instead either as an end-product of the petroleum industry, or produced from vegetable oils such as palm oil and coconut oil. Production of cetyl alcohol from palm oil gives rise to one of its alternative names, palmityl alcohol.

Uses

Cetyl alcohol is used in the cosmetic industry as a surfactant in shampoos, or as an emollient, emulsifier or thickening agent in the manufacture of skin creams and lotions. It is also employed as a lubricant for nuts and bolts.

Related compounds

• Palmitate
• Palmitic acid

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