| Items | Specifications |
| Assay C6H10N2O2 | 98.0~102.0% |
| Appearance | White or off-white crystalline powder |
| Identification | Complies with the infrared absorptions of RS |
| Clarity and color of the solution | Should be clear and colorless |
| Loss on drying | ≤1.0% |
| Residue on ignition | ≤0.1% |
| Heavy metals (as Pb) | ≤10 ppm |
| Related substance | Single impurity ≤0.1% |
| Total impurities ≤0.3% | |
| O.V.I | Isopropanol ≤2000ppm |
| Methanol ≤1500ppm |
