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Product Description: Supply CAS No. 7681-57-4 Sodium Metabisulfite for Industrial Grade
Product Informations:
| CAS No. | 7681-57-4 |
| EINECE | 231-673-0 |
| HS CODE | 2832100000 |
| MOLECULAR FORMULA | Na2S2O5 |
Specifications:
1) Food Grade
| Items | Specifications | Typical Analysis | |
| Colour | / | White or yellowish | White |
| State | / | Crystalline powder | Crystalline powder |
| Na2S2O5 | (%) | 96.5 Min. | 97.1 |
| Fe | (%) | 0.003 Max | 0.0021 |
| Clarity | / | Passed | Passed |
| As | (ppm) | 1.0 Max | 0.85 |
| Heavy Metal(as Pb) | (ppm) | 5.0 Max | 0.04 |
2) Industrail Grade
| Items | Specifications | Typical Analysis | |
| Na2S2O5 | (%) | 96.5 Min. | 96.83 |
| Fe | (%) | 0.003 Max | 0.0006 |
| As | (ppm) | 1.0 Max | 0.8 |
| Heavy Metal(as Pb) | (ppm) | 5.0 Max | 2.0 |
Remarks:
1. Packing: plastic woven bag with PE liner.
2. Utilizes China National Standard GB1893-2008.
Packing :
25kg /50kg /1000kg plastic woven bag, or as per customer demanding.
Sodium Metabisulfite Applications:
| 1 | Used in wide range of industrial and municipal waste water treatment. |
| 2 | Used in pulp and paper making. |
| 3 | Used in mining industry. |
| 4 | Used in production of cleaning agents, detergents ans soaps. |
| 5 | Used in sterilizing the equipment in beer and wine manufacturing. |
| 6 | Used in water reducing agent for concrete admixture in construction industry. |
| 7 | Used in dye industry. |
| 8 | Used in oil field production and disinfection. |
| 9 | Used in removal of tree stumps in landscape gardening. |
| 10 | Used in water treatment in leather tanning process. |
| 11 | Used in food preservative for dried foods |
