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Item | Specification | Result |
Appearance | Fine,white,odorless,crystalline powder powder | pass |
Assay(dry basic)% | ≥98.0 | 99.4 |
pH | 5.0-6.7 | 6.5 6.5 |
Ignition residue % | ≤0.05 | 0.016 |
Loss on drying % | ≤1.5 | 0.13 |
Chroma | ≤0.100 | 0.0034 |
Turbidity | ≤0.05 | 0.0034 |
As, mg/kg | ≤0.5 | negative(<0.010) |
Pb, mg/kg | ≤0.5 | negative(<0.05) |




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