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Sodium Metabisulfite (Na2S2O5) is a white, crystalline powder that is commonly used as a food preservative, antioxidant, and disinfectant. In the food industry, it is used to preserve the color and flavor of dried fruits, canned goods, and wine. Sodium metabisulfite is also used as a reducing agent in various industrial applications, such as in the pulp and paper industry, textiles, and photography. In addition, it is used in water treatment as a disinfectant and dechlorinating agent. Although sodium metabisulfite is considered to be safe for food use at approved levels, it can cause allergic reactions in some individuals and should be used with caution.
| Item | Index | |
| Premium | Top Quality | |
| Main Content(na2s2o5).%≥ | 96.5 | 95 |
| Iron（fe) Content,%≤ | 0.005 | 0.01 |
| Water Insoluble Content,%≤ | 0.05 | 0.05 |
| Arsenic（as）content,%≤ | 0.0001 | / |
| Cas No | 7681-57-4 | |
| Molecular Formula | Na2s2o5 | |
| Appearance | White or Yellowish Crystalline Powder |
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