CAS No.: | 50-81-7 |
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Formula: | C6h8o6 |
Packaging Material: | Paper |
Storage Method: | Normal |
Shelf Life: | >12 Months |
Nutrient Composition: | Vitamin |
Samples: |
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Customization: |
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Test Items | Specification | Test Result |
Characters | White or light yellow crystaline powder | Complied |
Specific optical rotation | +20.5°~ +21.5° | +21.0° |
Identification |
|
Complies Positive |
Assay(%) | 99.0% | 99.7% |
Acidity(PH) | 2.1-2.6(5% aqueous solution) 2.4-2.8(2% aqueous solution) |
2.4 2.6 |
Clarity of solution | Clear | Clear |
Heavy metal | ≤0.001% | <0.001% |
Arsenic | ≤3mg/kg | <3mg/kg |
Lead | ≤2mg/kg | <2mg/kg |
Iron | ≤2mg/kg | <2mg/kg |
Copper | ≤5mg/kg | <5mg/kg |
Specific Rotation | +20.5°- +21.5 | +21.0° |
Melting Point | About 190ºC | 190ºC |
Sulphated Ash | ≤0.2% | 0.04% |
Oxalic acid | ≤0.2% | Complies |
Related Substance | Impurity C:≤0.15% Impurity D:≤0.15% Unspecified Impurities:≤0.10% Total Impurities other than C.D:≤0.2% |
Not detected 0.02% Less than disregard limit Less than disregard limit |
Residual Solvents | Methanol≤0.3% | 0.107% |
Loss on drying | ≤0.40% | 0.03% |
Conclusion | Complied with GB14754-2010 |
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