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Item | Standard | Result | |
Appearance | White or brown powder with no or light special smell | qualified | |
Content (Dry basis) | ≥98.5% | 98.55 | |
Dry weightlessness | ≤1.0% | 0.57 | |
Burn draff | ≤0.3% | 0.14 | |
PH | 5.0~6.0 | 5.81 | |
Ammonium salt | ≤0.04% | 0.016 | |
Specific rotation | '+18.0o~+21.5o | '+20.95o | |
Heavy metal (as Pb) | ≤0.003% | 0.001 | |
Arsenic | ≤0.0002% | 0.0001 | |
Analytical conclusion | QUALIFIED |