CAS Number: 7681-57-4
Molecular Formula: Na2S2O5
Formula Weight: 190.11

Sodium Metabisulfite Lab Specifications:
Typical Analysis
Assay (Na2S2O5): 90.0-100.5%

Maximum Limits
Iron (Fe): 10 mg/kg
Lead: 2 mg/kg
Selenium (Se): 5 mg/kg

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