CAS ：73-55-6 Molecular formula: C11H12N2O2 Molecular weight: 204.23
Physical and chemical properties: Density 1.34, melting point 280-285℃, specific rotation -31.1℃ (C=1, H20), water solubility 11.4g/L (25℃)
Food additives, nutritional supplements, antioxidants.
| Items | Index |
| Assay | 98%Min |
| Loss on drying | ≤0.30% |
| Heavy metals | ≤0.0015% |
| Sulphate% (SO4) | ≤0.03% |
| Residue on ignition | ≤0.1% |
| Specific Rotation | -29.0- -32.3 |
