Sodium Metabisulfite (SMBS)

1. Quick Details Brand Name: REAPCHEM Pro Name: Sodium Metabisulfite Other Name: SMBS Place of Origin: Shandong, China Molecular Formula: Na2S2O5 Molecular weight: 190.09 CAS No: 7681-57-4 Appearance: White powder crystal Solubility: 100% Grade: TECH Grade / FOOD Grade/High purity Grade 2. Packaging & Delivery Packaging detail: PP woven bag with PE inner bag in 25kg/50kg/1000kg or according to customer's demand. Loaded: 25mt/20'FCL with pallets, 25mt/20'FCL without pallets Delivery detail: Within 7-10 days Transportation: BY SEA Port: QINGDAO or TIANJIN 3. Specifications Analysis Item Specification TECH Grade FOOD Grade High Purity Grade Assay 96.5% min 97.0% min 98.0% min Iron (as Fe) 0.005% max 0.003% max 0.001% max Appearance of solution - Colorless and transparent - Arsenic (as As) 0.0001% max 0.0001% max 0.0001% max Heavy Metals (as Lead) - 0.0005% max 0.0005% max pH 4.0-4.6 4.0-4.6 4.0-4.6 Water Insoluble 0.05% max 0.05% max 0.05% max 4. Application Sodium metabisulfite is mainly used as preservative in food applications, as an enzyme inhibitor in waste water treatment and leather tanning process. For bleaching wool and jute in textile industries. As antichlor after cotton bleaching printing and dying industry, to destroy cyanides in gold mining industry. Preservative in photo developer solutions, as reducing agent and sulfonating agent for chemical and medical industries etc.