| Customization: | Available |
|---|---|
| CAS No.: | 7681-57-4 |
| Formula: | Na2s2o5 |
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Specification of Sodium Metabisulfite :
| Tests | Specification |
| Appearance | White free-flowing Crystal Powder |
| Purity (Na2S2O5) | 97% min |
| Iron (Fe) | 0.003% min |
| Heavy Metal (Pb) | 5 ppm max |
| (As) | 1 ppm max |
| Water Insoluble | 0.05% max |
| PH Value | 4.0-4.6 |
Sodium metabisulfite is used for the production of insurance powder; Used as a component of fixative in the photography industry; The spice industry is used to produce vanillin; Used as a preservative in the brewing industry; Rubber coagulants and dechlorination agents are used for bleaching cotton fabrics; Organic intermediates; Used for printing and dyeing, leather making; Used as a reducing agent; Used for wastewater treatment in electroplating industry, oil fields, and mineral processing agents in mines; Used as a preservative, bleach, and loosening agent in food processing.
25kg pp bag or 1250kg Ton Bag; kept in a light-proof,well-colsed,dry and cool place.
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