Sorbitol is a clear, colorless, syrupy liquid with a sweet taste, neutral to litmus, miscible with water, glycerin and propylene glycol. Physiological functions (1) Sorbitol is absorbed slowly by passive diffusion after entering the intestinal tract. It is a small amount of absorbed and metabolized fructose, so its energy value is low, about 12.54 kilojoule grams. It has a cool sweet taste, about half as sweet as sucrose, and a calorific value similar to sucrose. It does not cause tooth decay when used as a sweetener. Can be used to produce vitamin C raw material, sorbitol through fermentation and chemical synthesis can be prepared vitamin C. It can also be used as raw materials for industrial surfactants, and it can be used to produce spane and Tween surfactants. Sorbitol has moisturizing properties and is used as a substitute for glycerin in toothpaste, cigarettes and cosmetics. Polyurethane rigid foams with certain flame retardancy can be produced from sorbitol and propylene oxide. In the food industry, it can be used as sweetener, humectant, chelating agent and tissue improver. In the pharmaceutical industry, sorbitol nitrifying sorbitol produced by the dehydrating sorbitol ester is the treatment of coronary heart disease drugs. Food additives, cosmetic raw materials, organic synthetic raw materials, moisturizers, solvents, etc.