Molecular Formula : Na2S2O5
Molecule Weight : 190.12
CAS NO .: 7681-57-4
Appearance : White Free Flowing Fine Crystal or Powder
Packing: Packed in 25kg plastic woven bag, 25kg Kraft paper bag,
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Item
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Quality Index
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Food Grade
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Industry Grade
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Purity ( As Na2S2O5)
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98.0% min
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96.0% min
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Sulfur Dioxide( SO2)
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65.0% min
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65.0% min
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Arsenic ( As )
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0.0002% max
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-
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Heavy metals ( As Pb )
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0.0005% max
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-
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Selenium (Se )
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0.0005% max
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-
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Iron (Fe)
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0.001% max
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0.002% max
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Water insoluble
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0.02% max
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0.05% max
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PH value :
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4.0-4.8
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4.0-4.8
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Remark :
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Conformed with FCC V and E 223 Standard
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