Items | Standard |
Identification | The IR Absorption spectrum is concordant with the spectrum of reference standard. |
Test A (IR) | Ratio:A245/A262,between 0.63 and 0.67 |
Test B (UV) | 0.63-0.67 |
Assay(By HPLC) | Not less than 98.5% W/W and not more than 101.5%W/W of C6H6N2O, calculated on the dried basis. |
Characteristics | White crystalline powder |
Melting range | 128℃-131℃ |
Loss on drying | ≤0.5% |
Residue on ignition | ≤0.1% |
Heavy metals | ≤0.003% |