| Index | Specifications | Results of Analysis | ||||
| Appearance | White or light brown powder,odorless or slight special odor | Conformed | ||||
| Content(Dry basis) | ≥ 98.5% | 98.91% | ||||
| [α] D 20 Specific rotation | +18.0°-+21.5° | 20.49% | ||||
| Dry weightlessness | ≤ 1.0% | 0.60% | ||||
| Burn draff | ≤ 0.30% | 0.18% | ||||
| Ammonium salt | ≤ 0.04% | 0.015% | ||||
| Heavy metal(as pb) | ≤ 0.003% | 0.0012% | ||||
| Arsenic | ≤ 0.0002% | 0.00011% | ||||
| Cadmium | 0.0003% | |||||
| Hg | 0.00004% | |||||
| PH(10g/dl) | 5.0-6.0 | 5.69 | ||||
| Conclusion | The product complies with the standard above. | |||||