Compilation of free information about human parts, their function, assembly, repair, and maintenance
Oleic acid
| Oleic acid | |
|---|---|
 |
|
| IUPAC name | (9Z)-octadec-9-enoic acid |
| Other names | (9Z)-Octadecenoic acid (Z)-Octadec-9-enoic acid cis-9-octadecenoic acid cis-Δ9-octadecenoic acid Oleic acid 18:1 cis-9 |
| Identifiers | |
| CAS number | [112-80-1] |
| SMILES | CCCCCCCC\C=C/CCCCCCC(OH)=O |
| Properties | |
| Molecular formula | C18H34O2 |
| Molar mass | 282.4614 g/mol |
| Appearance | Pale yellow or brownish yellow oily liquid with lard-like odor |
| Density | 0.895 g/mL |
| Melting point |
13-14°C (286 K) |
| Boiling point |
360°C (633 K) (760mm Hg)[1] |
| Solubility in water | Insoluble in water; soluble in Methanol |
| Hazards | |
| MSDS | ScienceLab.com |
|
Except where noted otherwise, data are given for materials in their standard state (at 25 °C, 100 kPa) Infobox disclaimer and references |
|
Oleic acid is a monounsaturated omega-9 fatty acid found in various animal and vegetable sources. It has the formula C18H34O2 (or CH3(CH2)7CH=CH(CH2)7COOH).[2] The saturated form of this acid is stearic acid.
Oleic acid makes up 55-80% of olive oil, though there may be only 0.5-2.5% or so as actual free acid, and 15-20% of grape seed oil and Sea buckthorn oil.[3]
Reduction of oleic acid at the carboxyl end yields oleyl alcohol.
Oleic acid is emitted by the decaying corpses of a number of insects, including bees and Pogonomyrmex ants and triggers the instincts of living workers to remove the dead bodies from the hive. If a live bee[4] or ant[5] is daubed with oleic acid, it is dragged off as if it were dead.
References
- ^ Oleic acid, Chemical Laboratory Information Profile, American Chemical Society
- ^ Bishop, Paul L. (2000). Pollution Prevention: Chapter 2 - Properties and Fates of Environmental Contaminants, instructional slides to accompany Pollution Prevention:Fundamentals and Practice, by Paul L. Bishop (ISBN 0-07-366147-3). Retrieved 2005-03-07.
- ^ Li, Thomas S. C. (1999). Sea buckthorn: New crop opportunity, from Perspectives on new crops and new uses by J. Janeck (ed.) Retrieved 2006-10-28.
- ^ Anies Hannawati Purnamadjaja, R. Andrew Russell (2005). "Pheromone communication in a robot swarm: necrophoric bee behaviour and its replication". Robotica 23 (6): 731-742. doi:10.1017/S0263574704001225.
- ^ Ayasse, M, Paxton, R (2002) Brood protection in social insects. In: Hilker, M, Meiners, T (eds.). Chemoecology of Insect Eggs and Egg Deposition. Blackwell, Berlin, 117-148.
External links
The content of this section is licensed under the GNU Free Documentation License (local copy). It uses material from the Wikipedia article "Oleic acid" modified December 22, 2007 with previous authors listed in its history.
