China Sodium Hydrosulfite/Sodium Dithionite 90%, Find details about China Sodium Dithionite Hydrate, Sodium Hydrosulphite from Sodium Hydrosulfite/Sodium Dithionite 90%
Items |
Index |
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Tech Grade |
Food Grade |
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Na2S2O4, % ≥ |
85 |
88 |
90 |
85 |
Fe, ppm ≤ |
20 |
20 |
20 |
--- |
Zn, ppm ≤ |
1 |
1 |
1 |
1 |
As, ppm ≤ |
--- |
--- |
--- |
1 |
Heavy Metal(as Pb), ppm ≤ |
--- |
--- |
--- |
1 |
Water Insolubles, % ≤ |
0.4 |
0.4 |
0.05 |
0.05 |