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Molecular formula: NaHSO3
Molecular weight: 104.06
CAS NO： 7631-90-5
Properties: white crystalline powder with sulfur dioxide odor. Soluble in water. It is gradually oxidized to sodium sulfate in the air.
Uses: as analytical reagent, reducing agent, bleaching agent, bacterial inhibitor, and etc.
Standard: maximum assay of impurities is in %
| Item |
Analytically pure-AR
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Chemically pure-CP
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Assay (SO2)
Clarity test
Water insoluble matter
Chloride (Cl)
Arsenic (As)
Iron (Fe)
Heavy metal (Pb)
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58.5—65.0
Qualified
≤0.005
≤0.01
≤0.0001
≤0.001
≤0.001
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58.5—65.0
Qualified
≤0.01
≤0.02
≤0.0002
≤0.002
≤0.002
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Packing: woven bag lined with plastic bag, kraft paper bag, or fiber drum, net weight is 25kg.
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