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Introduction:
It is widely used in textile industry for reductive dyeing, reductive cleaning, printing, decolorization and bleaching of silk, wool, nylon and other fabrics, it does not fade easily. In a variety of substances, powder can also be used for food bleaching, such as gelatin, sugar, honey, soap, animal (vegetable) oil, bamboo, china clay bleaching. The powder can also be used in organic synthesis, such as dyes, pharmaceutical production as a reducing agent or bleach, it is the most suitable for wood pulp and paper bleaching agent. In water treatment and pollution control, many heavy metal ions such as PB2 + , Bi3 + can be reduced to metals, and can also be used to preserve food and fruits.
| ITEM | STANDARD | ACTUAL DATA |
| sodium Hydrosulfite % | 90 Min | 90.36 |
| water insoluble % | 0.1 Max | 0.04 |
| sodium thiosulfate: Na2S2O3 % | 1.2 Max | 0.6 |
| sodium metabisulfite: Na2S2O5 % | 5-7 | 6.0 |
| Sodium bisulfite: NaHSO3 % | 0.5 Max | 0.22 |
| Sodium carbonate: Na2CO3 % | 0.6-2 Max | 1.2 |
| sodium formate: HCOONa % | 0.5 Max | 0.21 |
| zn % | 0.0001 Max | 0.00001 |
| Fe % | 0.005 Max | 0.001 |
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