Sodium metabisulfite AGR

Na₂S₂O₅
Sodium pyrosulfite, Sodium disulfite
M.W: 190.11  CAS: 7681-57-4  EC: 231-673-0   TARIC: 28321000
EC INDEX: 016-063-00-2   

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• Appearance ? White crystalline powder
• Assay ? 97%
• Substances insoluble in water (H2O) ? 0.005%
• Chloride (Cl^–) ? 0.005%
• Arsenic (As) ? 0.0001%
• Phosphate (PO₄) ? 0.002%
• Thiosulphates (S₂O₃) ? 0.05%
• Heavy metals (Pb) ? 0.001%
• Iron (Fe) ? 0.002%

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