| TESTS | SPECIFICATIONS |
| Description | White to almost white powder,hygroscopic |
| Solubility | Freely soluble in water,slightly soluble in alcohol |
| Identification | A.Liquid chromatographic identification test |
| B.A reddish violet color is produced | |
| C.Test for sulphate | |
| PH(2%) | 5.0~7.0 |
| PH(0.5%) | 5.0~7.5 |
| Specific rotation | -78°~-90° |
| Loss on drying | ≤6.0% |
| Phenylalanine | 9.0~12.0% |
| Sulphated ash | ≤0.75% |
| Sulphate | 15.5%~17.5% |
| Heavy metals | ≤20ppm |
| Sterility | Meets the requirements |
| Assay(Microbial) | ≥6500IU/MG(on the dried basis) |
| Particle size |
99%:Not more than 30μM by vol. 90%:Not more than 25μM by vol. 75%:Not more than 20μM by vol. Mean diameter: Not more than 8.0μM |
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