Molecular Formula: C5H11NO2S
Molecular Weight: 149.21
CAS No： 59-51-8
| DL-Methionine | EP6 | AJI92 |
| Assay | 99.0-101.0% | 99.0-100.5% |
| PH | 5.4-6.1 | 5.6-6.1 |
| Specific rotation[a]D20 | / | / |
| Specific rotation[a]D25 | / | / |
| Transmittance(T430) | / | ≥98.0% |
| Appearance of solution | clear & colorless | / |
| Chloride(Cl) | ≤0.02% | ≤0.02% |
| Ammonium(NH4) | / | ≤0.02% |
| Sulfate(SO4) | ≤0.02% | ≤0.02% |
| Iron(Fe) | / | ≤10PPM |
| Heavy metals(Pb) | ≤20PPM | ≤10PPM |
| Arsenic | / | ≤1PPM |
| Other amino acids | / | conform |
| Ninhydrin-positive substances | / | / |
| Loss on drying | ≤0.50% | ≤0.30% |
| Residue on ignition | ≤0.10% | ≤0.10% |
| Total plate count | ≤ 1000 CFU/g | ≤ 1000 CFU/g |
| Moulds & Yeasts | ≤ 100 CFU/g | ≤ 100 CFU/g |
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