Supply of sodium metabisulfite

Properties: white crystalline powder CAS: 7681-57-4 Uses: bleach formula: Na2S2O5 Molecular Weight: 190.09 Properties: Sodium metabisulfite is white or yellow crystalline powder or small crystals, with a strong SO2 smell, specific gravity 1.4, dissolved water, acidic aqueous solution, with a strong acid in contact with the release of SO2 and generate the corresponding salts, long home air, the oxidation of Na2S2O4, so the product can not go far. Higher than 1500C, decomposition of the SO2. Uses: industry metabisulfite used for dyeing, organic synthesis, printing, leather, pharmaceutical and other sectors; as a preservative in food processing, bleach, bulking agent.