1.Industrial grade sodium metabisulphite
Purity(Calculated with Na2S2O5) |
≥95% |
|
(SO2≥65%) |
Iron(Fe) |
≤0.005% |
Water insoluble matter |
≤0.05% |
PH value: |
4.0-4.6 |
Uses: Mainly used for producing medicine iodoform, Sola sulfone, vanillin Photogra0phical fixative, rubber solidfying agent, dechloride agent of bleached fiber, leather treatment of leathermaking industry, etc.
Packing:25kgs,50kgs per each woven bag with plastic lining or 1000kgs per each package
2.Foodstuff grade sodium metabisulphite
Purity(Calculated with Na2S2O5) |
≥95% |
Iron(Fe) |
≤0.0005% |
Water insoluble matter |
≤0.05% |
Arsenic (As) |
≤0.0002% |
Heavy metal (Cal.in Pb) |
≤0.002% |
PH value: |
4.0-4.6 |
Uses:Mainly used for manufacturing sulfurous acid and bactericidal, Carrying out vegetable dehydrate, fruit preservation and bleaching.
Packing:25kgs,50kgs per each woven bag with plastic lining, or 1000kgs per each package