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Items of Analysis | Standard of Analysis | Test Results |
Appearance | Light yellow crystalline powder | Light yellow crystalline powder |
Assay | ≥99.5% | 99.75% |
Loss on Drying | ≤0.2% | 0.15% |
Melting point | 161℃~163℃ | 161℃~162℃ |
Residue on ignition | ≤0.1% | 0.03% |
Heavy metal | ≤20ppm | <20ppm |
As | ≤3ppm | <3ppm |
Pb | ≤2ppm | <2ppm |
Conclusion | Conforms to Factory Standard |
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