Chemistry:Behenic acid
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| Names | |
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| Preferred IUPAC name
Docosanoic acid | |
| Other names
Behenic acid, Docosanoic acid; 1-Docosanoic acid; n-Docosanoic acid, n-Docosanoate, Glycon B-70, Hydrofol Acid 560, Hydrofol 2022-55, Hystrene 5522, Hystrene 9022, Prifrac 2989, C22:0 (Lipid numbers)
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3D model (JSmol)
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PubChem CID
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| Properties | |
| C22H44O2 | |
| Molar mass | 340.592 g·mol−1 |
| Appearance | White solid |
| Melting point | 80.0 °C (176.0 °F; 353.1 K)[1] |
| Boiling point | 306 °C (583 °F; 579 K) |
| Hazards | |
| NFPA 704 (fire diamond) | |
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). | |
 verify (what is   ?)
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| Infobox references | |
Behenic acid (also docosanoic acid) is a carboxylic acid, the saturated fatty acid with formula C
21H
43COOH. In appearance, it consists of white solid although impure samples appear yellowish.
Sources
At 9%, it is a major component of ben oil (or behen oil), which is extracted from the seeds of the drumstick tree (Moringa oleifera). It is so named from the Persian month Bahman, when the roots of this tree were harvested.[2]
Behenic acid is also present in some other oils and oil-bearing plants, including rapeseed (canola) and peanut oil and skins. It is estimated that one ton of peanut skins contains 13 pounds (5.9 kg) of behenic acid.[3]
Properties
As a dietary oil, behenic acid is poorly absorbed. In spite of its low bioavailability compared with oleic acid, behenic acid is a cholesterol-raising saturated fatty acid in humans.[4]
Uses
Commercially, behenic acid is often used to give hair conditioners and moisturizers their smoothing properties.[3] It is also used in lubricating oils, and as a solvent evaporation retarder in paint removers. Its amide is used as an anti-foaming agent in detergents, floor polishes and dripless candles. Reduction of behenic acid yields behenyl alcohol.
Pracaxi oil (from the seeds of Pentaclethra macroloba) is a natural product with one of the highest concentrations of behenic acid, and is used in hair conditioners.
See also
- Behenyl alcohol
- Glyceryl behenate
- Silver behenate
References
- ↑ Beare-Rogers, J. L.; Dieffenbacher, A.; Holm, J. V. (2001). "Lexicon of lipid nutrition (IUPAC Technical Report)". Pure and Applied Chemistry 73 (4): 685–744. doi:10.1351/pac200173040685. http://iupac.org/publications/pac/73/4/0685/.
- ↑ "History of scientific nomenclature and mathematical symbols - Numericana". http://www.numericana.com/answer/culture.htm.
- ↑ 3.0 3.1 USDA Scientists Find Treasure in Peanut Skins .
- ↑ Nilo B Cater and Margo A Denke, January 2001, Behenic acid is a cholesterol-raising saturated fatty acid in humans. American Journal of Clinical Nutrition, v 73, No. 1, pp 41-44.[unreliable source?].
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