CERTIFICATE OF ANALYSIS
L-TYROSINE
BATCH NO: 051206
MANUFACTURING DATE: NOV 06.2005
EXPIRY DATE: NOV 06.2007
| ITEM | SPECIFICATION | RESULT |
| 1. Appearance: | white crystal powder | Conform |
| 2. Identification: | Positive | Conform |
| 3. State of solution: | Clear & colorless | Conform |
| 4. Specific rotation: | -9.8 to -11.2 | -10.4 |
| 5. Loss on drying: | Not more than 0.3% | 0.13% |
| 6. Residue on ignition: | Not more than 0.4% | 0.05% |
| 7. Chloride: | Not more than 0.04% | Conform |
| 8. Sulfate: | Not more than 0.04% | Not more than 0.02% |
| 9. Iron (Fe): | Not more than 30ppm | Not more than 10ppm |
| 10. Heavy metals | Not more than 15ppm | Not more than 10ppm |
| 11. Organic volatile impurities: | Meet the requirements | Meet the requirements |
| 12. Assay: | 98.5 to 101.5% | 99.50% |
| 13. PH: | 5.0 to 6.5 | 6.1 |
| 14. Particle size: | 100% pass through 40mesh | Conform1 |
| 15. Bulk density: | 0.4-0.45 g/ml | 0.42 g/ml |
Produced by WIRUD Co.Ltd China