China Sodium Hydrosulfite Powder 7775-14-6 Na2s2o4 Sodium Dithionite Hydrate Sodium Hydrosulphite Price Sodium Hydrosulfite, Find details about China Sodium Dithionite Hydrate, Na2s2o4 from Sodium Hydrosulfite Powder 7775-14-6 Na2s2o4 Sodium Dithionite Hydrate Sodium Hydrosulphite Price Sodium Hydrosulfite
Index | I | II | III |
Sodium Hydrosulphite | 90% Min. | 88% Min. | 85% Min. |
Water insoluble | 0.2% Max. | 0.2% Max. | 0.2% Max. |
Sodium carbonate: Na2CO3 | 1-5% | 1-5% | 1-5% |
Zn | 0.0001 % Max. | 0.0001% Max. | 0.0001% Max. |
Fe | 0.002 % Max. | 0.002% Max. | 0.002% Max. |
Physical appearance | White crystalline powder |