Arakidihappo

Arakidihappo
Tunnisteet
IUPAC-nimi ikosaanihappo
CAS-numero 506-30-9
PubChem CID 10467
SMILES O=C(O)CCCCCCCCCCCCCCCCCCC
Ominaisuudet
Molekyylikaava C20H40O2
Moolimassa 312,53 g/mol g/mol
Sulamispiste 75,5 °C
Kiehumispiste 328 °C
Tiheys 0,8240 g/cm3
Liukoisuus veteen 0,044 g/l (33 °C)[1]

Arakidihappo (tunnetaan myös nimillä ikosaanihappo, eikosaanihappo ja maapähkinäöljyhappo[2]) on tyydyttynyt rasvahappo, jonka molekyylissä on 20 hiiliatomin ketju. Yhdistettä on tavattu pieninä pitoisuuksina pähkinäöljyssä (1,1–1,7 %)[3] ja maissiöljyssä (3 %)[4]. Yhdisteen nimi tulee latinan sanasta arachis, joka tarkoittaa pähkinää. Arakidihappoa syntyy myös arakidonihapon hydrauksessa. Arakidihaposta voidaan tuottaa arakidyylialkoholia. Yhdistettä käytetään liukasteiden, valokuvausmateriaalien ja pesuaineiden tuotannossa.

Arakidihappoa esiintyy kasveissa ja semiokemikaalina, pääasiassa feromonina, eliöiden viestinnässä.

Lähteet

  1. ↑ Icosanoic acid:Water solubility European Chemicals Agency. Viitattu 1.7.2024. (englanniksi)
  2. ↑ EU-direktiivi 2004, viitattu 30.7.2.12[vanhentunut linkki]
  3. ↑ Beare-Rogers, J.; Dieffenbacher, A.; Holm, J.V.: Lexicon of lipid nutrition (IUPAC Technical Report). Pure and Applied Chemistry, 2001, 73. vsk, nro 4, s. 685–744. doi:10.1351/pac200173040685 Artikkelin verkkoversio.
  4. ↑ U.S. Department of Agriculture, Agricultural Research Service. 2007. USDA National Nutrient Database for Standard Reference, Release 20. Nutrient Data Laboratory Home Page

Aiheesta muualla

Rasvahapot
Tyydyttyneet
Omega-1Undekyleenihappo (11:1)
Omega-3
Omega-5
Omega-6
Omega-7
Omega-9
Omega-12Petroseliinihappo (18:1)
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