L-Glutamine
Molecular Formula: C5H10N2O3 Molecular Weight: 146.14 CAS No： 56-85-9
| L-Glutamine | CP2020 | USP2023 | USP32 | FCC11 | JSFA |
| Assay | ≥99.0% | 98.5-101.5% | 98.5-101.5% | 98.5-101.5% | 98.0%～102.0% |
| PH | 4.8 ～ 5.8 | / | / | / | 4.5～6.0 |
| Specific rotation[a]D20 | +6.3°-+7.3° | +6.3°-+7.3° | +6.3°-+7.3° | +6.3°-+7.3° | +6.3°-+7.3° |
| Specific rotation[a]D25 | / | / | / | / | / |
| Transmittance(T430) | ≥98.0% | / | / | / | Colorless and clear |
| Chloride(Cl) | ≤ 0.02% | ≤0.05% | ≤0.05% | / | ≤ 0.1 % |
| Ammonium(NH4) | ≤ 0.10% | / | / | / | / |
| Sulfate(SO4) | ≤ 0.02% | ≤0.03% | ≤0.03% | / | / |
| Iron(Fe) | ≤ 10 PPM | ≤30PPM | ≤30PPM | / | / |
| Heavy metals(Pb) | ≤ 10 PPM | / | ≤15PPM | / | ≤2PPM |
| Arsenic | ≤1PPM | / | / | / | ≤3PPM |
| Lead | / | / | / | ≤5PPM | / |
| Other amino acids | Individual impurities≤0.5% Total impurities≤1.0% |
≤0.5% | ≤0.5% | / | / |
| Ninhydrin-positive substances | / | / | / | / | / |
| Insoluble foreign matter | / | / | / | ≤50PPM | / |
| Loss on drying | ≤ 0.30% | ≤0.30% | ≤0.30% | ≤0.30% | ≤0.30% |
| Residue on ignition | ≤ 0.10% | ≤0.30% | ≤0.30% | ≤0.10% | ≤0.10% |
| Endotoxin | ＜ 25 EU/g | ＜ 25 EU/g | / | / | / |
| Total plate count | ≤ 1000 CFU/g | ≤ 1000 CFU/g | ≤ 1000 CFU/g | ≤ 1000 CFU/g | ≤ 1000 CFU/g |
| Moulds & Yeasts | ≤ 100 CFU/g | ≤ 100 CFU/g | ≤ 100 CFU/g | ≤ 100 CFU/g | ≤ 100 CFU/g |
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