Arachidic acid

Arachidic acid
Arachidic acid
CAS number 506-30-9 YesY
PubChem 10467
ChemSpider 10035 YesY
KEGG C06425 YesY
ChEBI CHEBI:28822 YesY
Jmol-3D images Image 1
Molecular formula C20H40O2
Molar mass 312.53 g mol−1
Appearance White crystalline solid
Density 0.8240 g/cm3
Melting point

75.5 °C, 349 K, 168 °F

Boiling point

328 °C, 601 K, 622 °F

Solubility in water Practically insoluble in water
Flash point 169.7 °C
 YesY acid (verify) (what is: YesY/N?)
Except where noted otherwise, data are given for materials in their standard state (at 25 °C, 100 kPa)
Infobox references

Arachidic acid, also called eicosanoic acid, is the saturated fatty acid with a 20 carbon chain. It is as a minor constituent of peanut oil (1.1%–1.7%)[2] and corn oil (3%).[3] Its name derives from the Latin arachis — peanut. It can be formed by the hydrogenation of arachidonic acid.

Reduction of arachidic acid yields arachidyl alcohol.

Arachidic acid is used for the production of detergents, photographic materials and lubricants.


  1. ^ *Merck Index, 11th Edition, 791
  2. ^ Beare-Rogers, J.; 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. 
  3. ^ U.S. Department of Agriculture, Agricultural Research Service. 2007. USDA National Nutrient Database for Standard Reference, Release 20. Nutrient Data Laboratory Home Page