Glycerol is a colorless, viscous liquid sweet clarity. Odorless. There are warm sweetness. Commonly known as glycerin, absorb moisture from the air, soluble in ethanol, miscible with water, not soluble in chloroform, ether, carbon disulfide, benzene, oils. but also absorb hydrogen sulfide, hydrogen cyanide and sulfur dioxide. Insoluble in benzene, chloroform, carbon tetrachloride, carbon disulfide, petroleum ether and oils. Glycerol backbone component is a triglyceride molecule. When the human intake of edible fats, where triglyceride metabolism through decomposition, formation of glycerol and stored in fat cells. Therefore, the final product of the metabolism of triglycerides is glycerol and fatty acids. Used as solvents, lubricants, pharmaceuticals and sweeteners. Industrial use 1, used in the manufacture of nitroglycerine, alkyd resins and epoxy resins. 2, in medicine, for the preparation of various formulations, solvents, hygroscopic agent, antifreeze and sweeteners, formulations of topical ointment or suppository. 3, in the paint industry for the preparation of various alkyd resins, polyester resins, epoxy resins and ether. 4, the textile and dyeing industry for the preparation of lubricants, moisture absorbent, anti-shrinkage fabric treatment agent, spreading agent and penetrant. 5, used as a sweetener, tobacco hygroscopic agents and solvents in the food industry. 6, paper, cosmetics, leather, photography, printing, metal processing, electrical materials and rubber industries have a wide range of uses. 7, and used as automotive antifreeze and aircraft fuel and oil fields. 8, glycerol can be used as a plasticizer for the new ceramic industry.