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Sodium pyrosulfite
Molecular formula: Na2S2O5
Molecular weight: 190.10
Properties: white or light yellow powder. Freely soluble in water. The aqueous solution is acidic.
| Purity ≥ | 95.0% |
| Clarity test | Pass |
| Water insoluble substances % ≤ | 0.005 |
| Chloride(Cl) % ≤ | 0.005 |
| Fe % ≤ | 0.0005 |
| As % ≤ | 0.0001 |
| Heavy metal(count by Cu) % ≤ | 0.0005 |



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