CERTIFICATE OF ANALYSIS
L-ISOLEUCINE
BATCH NO: 051212
MANUFACTURING DATE: DEC.12.2005
EXPIRY DATE: DEC.11.2007
| ITEM | SPECIFICATION | RESULT |
| 1. Appearance: | White crystals or crystalline | Conform |
| 2. Identification: | Infrared Absorption | Conform |
| 3. Specific rotation: | +38.9 to +41.8 | +39.3 |
| 4. PH: | 5.5-7.0 | 5.7 |
| 5. Loss on drying: | Not more than 0.3% | 0.13% |
| 6. Residue on ignition: (sulfated) | Not more than 0.3% | 0.08% |
| 7. Chloride: | Not more than 0.05% | Less then 0.05% |
| 8. Sulphate: | Not more than 0.03% | Less then 0.03% |
| 9. Iron: | Not more than 30ppm | Less then 30ppm |
| 10. Heavy metals: | Not more than 15ppm | Less then 15ppm |
| 11. Organic volatile impurities: | Meet the requirements | Conform |
| 12. Assay: | 98.5 to 101.5% | 99.8% |
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