Specification: Food grade
Na2S2O5: 96.0% min
Content(as SO2): 65%min
Water-insoluble matter: 0.05%max
Iron(Fe): 0.003%max
pH: 4.0-4.6
Arsenic (As): 0.0002%max
Lead (Pb): 0.002%max
Shipment: 25MT/20'FCL.
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