Glycerol, also known as glycerin, is an organic compound with the chemical formula of C3H8O3. It is a colorless, odorless, transparent and viscous liquid. It can absorb moisture from the air, as well as hydrogen sulfide, Hydrogen cyanide and sulfur dioxide. It is miscible with water and alcohols, amines and phenols in any proportion, and is insoluble in benzene, chloroform, carbon tetrachloride, Carbon disulfide, Petroleum ether and oils. It is mainly used as organic chemical raw materials, as well as analytical reagents and lubricating laxatives.