Sodium metabisulfite
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Molecular Structure
Detailed Description
Item
Food Grade
Purity ( As Na2S2O5) 98.0% min
Sulfur Dioxide( SO2) 65.0% min
Arsenic ( As ) 0.0002% max
Heavy metals ( As Pb ) 0.0005% max
Selenium (Se ) 0.0005% max
Iron (Fe) 0.001% max
Water insoluble 0.02% max
PH value : 4.0-4.8