C18H36O

C18H36O is the molecular formula for several isomers, each representing a different organic compound. The most common interpretation of this formula refers to octadecanol, a saturated fatty alcohol. Octadecanol exists as a mixture of two isomers: 1-octadecanol and 2-octadecanol. 1-octadecanol, also known as stearyl alcohol, is a straight-chain primary alcohol. It is a waxy solid at room temperature, typically appearing as white flakes or granules. 1-octadecanol is widely used in the cosmetics and personal care industry as an emollient, emulsifier, and thickener in products such as lotions, creams, and shampoos. It also finds applications in the production of lubricants, plasticizers, and candles. 2-octadecanol is a secondary alcohol where the hydroxyl group is attached to the second carbon atom of the eighteen-carbon chain. It is less common and has fewer industrial applications compared to 1-octadecanol. Other isomers with the formula C18H36O are possible, including branched-chain octadecanols and compounds with the oxygen atom in different positions within the carbon chain, though these are generally less prevalent and commercially significant. The physical and chemical properties of these isomers vary depending on the specific arrangement of atoms.