CERTIFICATE OF ANALYSIS
L-CYSTINE
BATCH NO: 051109
MANUFACTURING DATE: 09 NOV 2005
EXPIRY DATE: 09 NOV 2007
| ITEM | SPECIFICATION | RESULT |
| 1. Appearance: | white crystalline powder | Conform |
| 2. Specific rotation: | -218~-224.0 | -220.5 |
| 3. Assay: | 98.5--101.0% | 99,45% |
| 4. Loss on drying: | 0.2% Max. | 0,045% |
| 5. Residue on ignition: | 0.1% Max. | 0,03% |
| 6. Chloride: | 0.02% Max. | 0,04% |
| 7. Fe: | 10ppm Max. | Conform |
| 8. Pb: | 10ppm Max. | Conform |
| 9. State of solution: | 98.0%% Min. | 99.50% |
| 10. Other amino acids: | Negative | None |
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