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L-Arginine
| ITEMS | LIMIT |
| Appearance | White crystalline powder |
| Assay , % | 99.0~101.0<> |
| Specific rotation | +26.9º~ +27.9º |
| Loss on drying, % | ≤0.5 |
| Transmittance, % | ≥98.0 |
| Chloride (as Cl), % | ≤0.02 |
| Sulfate (as SO4), % | ≤0.02 |
| Ammonium as (as NH4), % | ≤0.02 |
| Iron (as Fe), % | ≤0.001 |
| Heavy Metals (as Pb), % | ≤0.001 |
| Arsenic (as As), % | ≤0.0001 |
| pH Value | 10.5~12.0 |
| Residue on ignition, % | ≤0.1 |
| Organic volatile impurities | Meets the requirements |
| Other amino acid | No detd |
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