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L-Phenylalanine
| ITEMS | LIMIT |
| Description | White crystals and crystalline powder |
| Assay | 98.5~101.5% |
| Specific optical rotation | -32.7 to –34.7 Degree |
| Chloride | Not more than 0.05% |
| Heavy metals | Not more than 15ppm |
| Iron | Not more than 30ppm |
| Sulfate | Not more than 0.03% |
| Ph | 5.4 ~ 6.0 |
| Loss on drying | Not more than 0.30% |
| Residue on ignition | Not more than 0.40% |
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