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Content (dry basis): | ≥98.5% |
Specific rotation: | +18.0°~+21.5° |
Dry weightlessness: | ≤1.0% |
Ammonium salt: | ≤0.04% |
Heavy metal (as Pb): | ≤0.003% |
Arsenic: | ≤0.0002% |
PH (10g/dl): | 5.0~6.0 |



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