Main Products: Fertilizer ,Pesticide ,Food & Feed Additive ,Preservative ,Water Treatment
sodium metabisulphite food grade white powder sodium metabisulphite
USD $260 - $275 /Metric Ton
Min.Order:1 Metric Ton
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Changsha Choice Chemicals Ltd.
Credit Member 4 years 
Business Type: Manufacturer,Trading Company
Changsha Hunan ChinaMain Products: Fertilizer ,Pesticide ,Food & Feed Additive ,Preservative ,Water TreatmentProduct Details
Production Information sodium metabisulphite food grade white powder sodium metabisulphite
| CAS RN: | 7681-57-4 |
| EINECS: | 231-673-0 |
| H.S.CODE: | 2832.1000.00 |
Chemical Analysis sodium metabisulphite food grade white powder sodium metabisulphite
| Component | Industrial Grade | Food Grade | Medicine Grade |
| Appearance | White or yellowish crystalline powder | ||
| Assay (Na2S2O5) | 96.5%min | 97%min | 98%min |
| water insoluble matter | 0.05%max | 0.03%max | 0.02%max |
| Iron content(Fe) | 0.005%max | 0.003%max | 0.002%max |
| Arsenic content(As) | 0.0001%max | 0.0001%max | 0.0001%max |
| Pb | 0.0005%max | 0.0005%max | 0.0003%max |
Application sodium metabisulphite food grade white powder sodium metabisulphite
| Industrial Uses | |
| Water Treatment | 1.Eliminating dissolved oxygen in waste water and in pipes; 2.Cleaning water pipes and reverse osmosis membranes in desalinization equipment as it is an antibacterial. 3.Sodium metabisulfite is used in water treatment plants to remove excess chlorine. |
| Bleaching Agent | Sodium metabisulfite's functions as a bleaching agent, which is useful in making paper pulp, cotton and wool. |
| Food Preservation | |
| Antimicrobial | 1.Sodium metabisulfite is commonly used as a food preservative for dried foods, as well as fruit concentrate juices. 2.Sodium metabisulfite acts as an antimicrobial, inhibiting the growth of fungi and bacteria, thereby keeping food fresh and safe. |
| In beer and wine manufacturing, sodium metabisulfite is used as both a sterilizer and an antioxidant in the process of brewing beer or fermenting wine. | |
| Other Uses | |
| Medicinal | Sodium metabisulfite is an antioxidant additive in inject able medicines and is also used as a reducing agent in pharmaceuticals. |
| Photographic and film industry | For preparing developer solutions, for acidifying fixing baths (photo grade). |
| Landscape Gardening | Sodium metabisulfite used in landscape gardening as a tree stump remover, as it disintegrates the lignin -- chemicals in plant cell walls -- in the tree stumps, making them easier to remove. |
| Fiber Industry | In the sulphitisation of tanning extract. |
| Gold mining | For bleaching ground wood, as an antichlor. |
Transportation Information
| DOT Classification: | Not a DOT controlled material |
| U.N. | Not applicable. |
| Packing Group: | Not applicable. |
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