Arachidic acid (IUPAC
name Eicosanoic acid
is a saturated fatty acid found in peanut oil with the molecular formula CH3
Its name derives from the Latin arachis - peanut. It can be formed by the hydrogenation of arachidonic acid.
It is practically insoluble in water, and stable under normal conditions. It is a surfactant.
Reduction of arachidic acid yields arachidyl alcohol.