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Products
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| Products |
| SODIUM HYDROSULFITE |
 General name :Sodium hydrosulphite
Quality standard :HG2074-91 JISK1476-1995
Molecular formula :Na2S2O4
Appearance :white free-flow crystal powders
Smell :flavourless or smell of sulfur dioxide
Packing :
1) iron bucket hermetic packing, inside liner double-layer plastic bag,net weight 50KG
2) soft package: inner line PE/nylon/PE three-layer composite plastic bag , outside bag is composite plastic weaving bag, net weight 25KG.
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| Guidelines |
90% |
88% |
85% |
| Na2S2O4 |
≥90% |
≥88% |
≥85% |
| Fe |
≤20ppm |
≤20ppm |
≤20ppm |
| Zinc(Zn) |
≤1ppm |
≤1ppm |
≤1ppm |
| Other heavy metal(With Pb to calculate) |
≤1ppm |
≤1ppm |
≤1ppm |
| Matter which does not dissolve in water |
≤0.05% |
≤0.05% |
≤0.05% |
| Storage time limit( month ) |
12 |
12 |
12 |
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