Molecular Formula: C4H7NO4
Molecular Weight: 133.10
CAS No： 56-84-8
| L-Aspartic Acid | USP32 | AJI92 |
| Assay | 98.5～101.5% | 99.0-100.5% |
| PH | / | 2.5-3.5 |
| Specific rotation[a]D20 | + 24°～ + 26° | +24.8°-+25.8° |
| Specific rotation[a]D25 | / | / |
| Transmittance(T430) | / | ≥98.0% |
| Chloride(Cl) | ≤ 0.02% | ≤0.02% |
| Ammonium(NH4) | / | ≤0.02% |
| Sulfate(SO4) | ≤ 0.03% | ≤0.02% |
| Iron(Fe) | ≤ 0.001% | ≤10PPM |
| Heavy metals(Pb) | ≤ 0.001% | ≤10PPM |
| Arsenic | / | ≤1PPM |
| Other amino acids | / | conform |
| Ninhydrin-positive substances | / | / |
| Loss on drying | ≤ 0.5% | ≤0.20% |
| Residue on ignition | ≤ 0.1% | ≤0.10% |
| Total plate count | ≤ 1000 CFU/g | ≤ 1000 CFU/g |
| Moulds & Yeasts | ≤ 100 CFU/g | ≤ 100 CFU/g |
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