
| item | specification | result |
| appearance | white to off white powder | white powder |
| solubility | slightly soluble in water,well soluble in ethanol | Slightly solute in water, well soluble in ethanol |
| assay % | 97.0-102.0 | 99.2 |
| water % (kf) | ≤5 | 1.2 |
| PH | 5.0-7.0 | 6.2 |
| melting point | 81-84 oC | 81-82oC |
| sulfated ash | ≤0.2 | 0.003 |
| speciific rotation | -43.4-40.0 | -41.0 |
| N-(N-(3,3-Dimethylbutyl)-α-Aspartyl)-l-phenyla lanine % | ≤1.5 | None detected |
| heveay metal (lead) | ≤1ppm | ≤1ppm |
| other related substances % | ≤2.0 | ≤2.0 |