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Testing Item | Standard | Yellow Crystalline Powder |
Appearance | White or off-white crystalline powder | conforms |
Assay (on dry basis) | 97.5%~100.5% | 98.74% |
Melting Point | 229℃~232℃, in-house | 230.0~231.5℃ |
Specific Rotation | +89°~+93° | +90.89° |
Individual impurity | ≤1.0% | 0.51% |
Total impurities | ≤2.0% | 1.34% |
Loss on Drying | ≤0.1%, in-house | 0.03% |
Sulfated ash | ≤0.1%, in-house | 0.05% |
Heavy Metal | ≤0.001%, in-house | <0.001% |
Arsenic | ≤0.0003%, in-house | <0.0001% |
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