| ITEM | FCCIV | AJI92 |
| Appearance | White crystalline powder | White crystalline powder |
| Assay | 98.5-101.5% | 98.5-101.5% |
| PH Value | 5.5-6.5 | 5.9-6.4 |
| Loss on drying | ≤0.2% | ≤0.2% |
| Residue on ignition | ≤0.1% | ≤0.1% |
| Chloride(as Cl) | ≤0.007% | ≤0.007% |
| Heavy metals(as Pb) | ≤0.002% | ≤0.001% |
| Sulphate(as SO 4 ) | ≤0.006% | ≤0.006% |
| Iron(as Fe) | ≤0.001% | ≤0.001% |
| Ammonium(NH 4 ) | ≤0.002% | ≤0.002% |
| Other amino acids | --- | conform |
| Pyrogen | --- | conform |
| ITEM | SPECTIFICATION |
| Appearance | White or close to white crystalline powder |
| Assay | 98.5-101.5% |
| Chloride(as Cl) | ≤0. 20 % |
| Loss on drying | ≤0.2 0 % |
| Residue on ignition | ≤0.1 0 % |
| Heavy metals( according to Pb ) /(mg/kg) | ≤ 20 |
| PH Value | 5.5- 7.0 |
| Clarity | Up to s. |
| ITEM | EP7.0 | BP2007 | USP39 | |
| Appearance | White crystalline powder | White crystalline powder | --- | |
| Appearance of solution | clear | clear | --- | |
| Identification test(first A, second B,C) | A | Up to S. | Up to S. | --- |
| B | Up to S. | Up to S. | ||
| C | Up to S. | Up to S. | ||
| Identification test (Infrared spectrum test) | --- | --- | Up to S. | |
| Ninhydrin-positive substances | Up to S. | --- | Up to S. | |
| Assay | 98.5-101.0% | 98.5-101.0% | 98.5-101.5% | |
| Chloride | ≤ 0.0075% | ≤ 0.0075% | ≤ 0.007% | |
| Heavy metals(as Pb) | ≤ 0.001% | ≤ 0.001% | ≤ 0.002% | |
| Sulfate | --- | --- | ≤ 0.0065% | |
| PH Value | 5.9 ~ 6.4 | 5.9 ~ 6.4 | --- | |
| Loss on drying | ≤ 0.5% | ≤ 0.5% | ≤ 0.2% | |
| Residue on ignition | --- | --- | ≤ 0.1% | |
| Readily hydrolysable substances | --- | --- | Up to S. | |