First, the product name:
Product Name: sodium metabisulfite Chemical name: Sodium metabisulfite:, also known as sodium disulfide five oxygen, sulfur oxide re-

Second, the physical and chemical nature of the finished product is white or yellowish crystalline powder, relative density 1.4 when wet. Soluble in water glycerol, slightly soluble in ethanol. Wet decomposition, when exposed in air easily oxidized into sulfate. Contact with acid emit sulfur dioxide and generate the corresponding salts. Heated to 150 degrees decomposition.

Third, the use of: the pharmaceutical industry for the production of chloroform, benzene, formaldehyde and styrene sulfone. Rubber industry used as coagulant. Cotton printing and dyeing industry as a bleaching agent after dechlorination, cotton scouring agent. Leather tanning industry for processing, make the leather soft, plump, tough, waterproof, bending, wear-resistant properties. Chemical industry for the production of hydroxyl vanillin, hydroxylamine hydrochloride and so on. Photographic industry as a developer and so on. Food industry as a bleaching agent, preservative, leavening agent, antioxidant, color protection agents and preservatives.