Categories
Price: | US $ 385/Ton |
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Trade Terms: | FOB,CFR,CIF |
Min Order: | 10/Ton |
Pay Type: | L/C,T/T |
Prod Model: | sodium metabisulfite |
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Markets: | North America,South America,Eastern Europe,Southeast Asia,Africa,Oceania,Mid East,Eastern Asia,Western Europe |
Product Name: | CAS No. 7681-57-4 97% Food Grade Preservative Sodi |
CAS No.: | 7681-57-4 |
Classification: | Other Inorganic Salts |
Other Name: | Smbs |
Mf: | Na2s2o5 |
Einecs No.: | 231-673-0 |
Place Of Origin: | China(Mainland) |
Application: | Water Treatment,Bleaching Agent |
Molecular Weight: | 190.1065 |
Water Solubility: | 540g/L |
Appearance: | Powder |
Grade Standard: | Food Grade |
CAS RN.: | 7681-57-4 |
EINECS: | 231-673-0 |
H.S.CODE: | 2832.1000.00 |
Component | Range | Typical |
Assay(Na2S2O5 ) | 96.0% min. | 97.5% |
Iron content(base on Fe) | 0.005% max. | 0.002% |
water insoluble matter | 0.05% max. | 0.02% |
Arsenic content(base on As) | 1 ppm max. | 1ppm |
Pb | 10 ppm max. | 5ppm |
Appearance | White or yellowish crystalline powder | |
Test Standard | Food Grade: GB 1893-2008 | |
Industrial Grade: HG/T2826-1997 |
Industrial Uses | |
Water Treatment | Eliminating dissolved oxygen in waste water and in pipes; Cleaning water pipes and reverse osmosis membranes in desalinization equipment as it is an antibacterial. 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 Preservative | |
Antimicrobial | Sodium metabisulfite is commonly used as a food preservative for dried foods, as well as fruit concentrate juices. 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. |
DOT Classification: | Not a DOT controlled material |
U.N. | Not applicable. |
Packing Group: | Not applicable. |