| Customization: | Available |
|---|---|
| CAS No.: | 7681-57-4 |
| Formula: | Na2s2o5 |
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Sodium Metabisulfite or sodium pyrosulfite (IUPAC spelling; Br. E. sodium metabisulphite or sodium pyrosulphite) is an inorganic compound of chemical formula Na2S2O5. The substance is sometimes referred to as disodium metabisulfite. It is used as a disinfectant, antioxidant and preservative agent.
Technical Specification
| Tests | Specification |
| Appearance | White free-flowing Crystal Powder |
| Purity (Na2S2O5) | 97% min |
| Iron (Fe) | 0.003% min |
| Heavy Metal (Pb) | 5 ppm max |
| Arsenic (As) | 1 ppm max |
| Water Insoluble | 0.05% max |
| PH Value | 4.0-4.6 |
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