CAS No.:74-79-3
L-Arginine
Molecular Formula：C6H14N4O2
Molecular Weight: 174.20
CAS Number: 74-79-3
Specifications
| L-arginine | CP2020 | EP11 | USP2023 |
| content | ≥99.0% | 98.5-101.0% | 98.5-101.5% |
| acidity | 10.5-12.0 | / | / |
| Specific rotation [a]D20 | +26.9°-+27.9° | +25.5°-+28.5° | / |
| Specific rotation [a]D25 | / | / | +26.3°-+27.7° |
| Light | ≥98.0% | / | / |
| Solution appearance | / | clear & colorless ≤BY6 | / |
| chloride | ≤0.02% | ≤0.02% | ≤0.05% |
| Ammonium salt | ≤0.02% | ≤0.02% | / |
| sulfate | ≤0.02% | ≤0.03% | ≤0.03% |
| Iron salts | ≤10PPM | ≤10PPM | ≤30PPM |
| heavy metal | ≤10PPM | / | / |
| Arsenic salts | ≤1PPM | / | / |
| Other amino acids | ≤0.4% | / | individual impurities≤0.5% total impurities≤2.0% |
| Ninhydrin active substance | / | Each impurity≤0.2% Sum of impurities≤ 0.5% | / |
| Loss on drying | ≤0.50% | ≤0.50% | ≤0.50% |
| Residue on ignition | ≤0.10% | ≤0.10% | ≤0.30% |
| endotoxin | <10EU/g | <10EU/g | <10EU/g |
| Total bacteria | ≤ 500 CFU/g | ≤ 500 CFU/g | ≤ 500 CFU/g |
| Mold & yeast | ≤ 50 CFU/g | ≤ 50 CFU/g | ≤ 50 CFU/g |