CERTIFICATE OF ANALYSIS
N-ACETYL L-CYSTEINE
BATCH NO: 20050308
MANUFACTURING DATE: DEC.18.2005
EXPIRY DATE: DEC.18.2007
| ITEM | SPECIFICATION | RESULT |
| 1. Specific roation: | +21.3 to +27.0 | +24.1 |
| 2. Assay: | 98.5 to 101.0% | 99.4% |
| 3. State of solution: |
Clear and colorless Not less than 98.0% |
98.3% |
| 4. Related substance: L-Cystine L-Cysteine N,N-Diacetyl L-Cystine N,S-diacetyl L-Cysteine Other impurity (each): Total impurity |
Not more than 0.5% Not more than 0.5% Not more than 0.5% Not more than 0.5% Not more than 0.5% Not more than 0.5% Not more than 0.5% |
Less than 0.5% Less than 0.5% Less than 0.5% Less than 0.5% Less than 0.5% Less than 0.5% Less than 0.5% |
| 5. Heavy metals: | Not more than 10ppm | Less than 10ppm |
| 6. Loss on drying: | Not more than 1.0% | 0.48% |
| 7. Residue ignition: | Not more than 0.20% | 0.11% |
| 8. PH: | 2.0 to 2.8 | 2.2 |
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