Stearic acid is a saturated fatty acid with an 18-carbon chain. The IUPAC name is octadecanoic acid. It is a waxy solid and its chemical formula is CHCOH.The salts and esters of stearic acid are called stearates. Due to is vast applications Stearic acid is used as a lubricating agent In polymer industries such as Plastics and Rubber extrusion products. It is used as a food additive. Used in the production of detergents. It is widely used in cosmetics, soaps, and shampoos, paints, candle making etc. Different grades of stearic acid are available as per its applications.