Sodium Pyrosulfite, Metabisulfite, Disodium Metabisulfite
Food IndustryUsed as bleaching agent, preservative, antioxidant and color fixative for dried fruits, candied fruit, bakery products, beverage, wine and starch products.
Textile IndustryUsed for fabric bleaching, deoxidation, decolorization and printing and dyeing auxiliary.
Water TreatmentUsed for wastewater reduction, dechlorination, decolorization and removal of heavy metals.
Chemical IndustryRaw material for sodium sulfite, sulfur dioxide production; used as reducing agent in chemical synthesis and pharmaceutical intermediates.
Other UsesMining mineral processing, leather tanning bleaching, paper pulp bleaching, electroplating industry additive.
| Item | Standard Specification |
|---|---|
| Sodium Metabisulfite (Na₂S₂O₅) | ≥96.0% / 98.0% |
| Sulfur Dioxide Content | ≥65.0% |
| Moisture | ≤0.5% |
| Water Insoluble Matter | ≤0.05% |
| Iron (Fe) | ≤0.005% |
| Heavy Metal (as Pb) | ≤0.001% |
| pH Value (10% Solution) | 4.0–4.6 |
25KG PP ,1000KG PP | 27 MT per 20'FCL (without pallets) / 25 MT (with pallets)


