Name: Sodium metabisulfiteCAS code: 7681-57-4Formula: Na2S2O5HS code: 28321000Appearance: white crystal powderPackage: 25kg, 1000kg/bagApplication:1. Used as dressing agent, wastewater treatment agent in industry2. Used as waste water mordant of printing and dyeing and etc.3. Used as reducing agent for developing agent and protective agent for fixing solution in togra industry4. Used as food additives in food industry.
| Item     | Specification |
| Na2S2O5 Content | 96.5% Min   |
| Iron (Fe) | 0.005% Max |
| Water Insoluble | 0.05% Max |
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