Oleyl alcohol is a derivative of unsaturated natural fatty acids. It is produced by catalytic hydrogenation of esters of oleic acid. Oleyl alcohol can also be derived by Boweault-Blanc reduction reaction of butyl oleate using sodium and butyl alcohol as raw materials. Furthermore, oleyl alcohol occurs naturally in fish oil and oils of other aquatic mammals. It is insoluble in water but miscible in other alcohols, ethers, and chloroform. Oleyl alcohol has broad range of industrial applications. It is used as cosmetic emollient, rheology modifier, defoaming agent, plasticizer, automotive lubricant, and chemical intermediate. Personal care, automotive, plastic, textile and leather, oil & gas, and printing ink industries are the key end-users of oleyl alcohol.