sodium metabisulphite

Product Description

Sodium metabisulfite is produced in industrial grade and food grade, and its quality indicators are different.

Industrial grade sodium metabisulfite is widely used. In the pharmaceutical industry, it is used for the purification of chloroform, phenylpropyl sulfone and benzaldehyde; in the rubber industry, it is used as a coagulant; in the printing and dyeing industry, it is used as a dechlorination agent for cotton cloth after bleaching, as a scouring aid for cotton cloth, and as a mordant for printing and dyeing; in the leather industry For leather treatment, it can make leather soft, plump, tough, waterproof, anti-folding, wear-resistant and other properties; used in the chemical industry to produce hydroxyvanillin, hydroxylamine hydrochloride, etc.; used in the photosensitive industry as a developer, etc.

Food-grade sodium metabisulfite can be used as a bleaching agent and leavening agent for foods such as biscuits and cakes, as a nutrient retaining agent for dehydrated vegetables, as a preservative for storing fruits, as a bactericidal preservative for brewing and beverages, etc. Sodium metabisulfite is slowly oxidized to sodium sulfate when exposed to humid air, accompanied by disintegration of crystals. The aqueous solution decomposes in the air, especially under heating conditions, and it should be filled with nitrogen when autoclaving. Glucose can reduce the stability of aqueous solution. Stable and effective in acidic solution. Sodium metabisulfite should be stored in airtight containers, away from light, and stored in a cool and dry place.