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CAS No.: 59-51-8
Molecular formular: C5H11NO2S
Molecular weight: 149.21
DL-Methionine | AJI92 | EP4 |
Description | White crystals or crystalline powder | White crystals or crystalline powder |
Identification | Conform | Conforms to the requirements |
Assay | 99.0%~100.5% | 99.0%～101.0% |
pH | 5.6~6.1 | 5.4～6.1 |
Transmittance | ≥98.0% | / |
Loss on drying | ≤0.30% | ≤0.5% |
Residue on ignition | ≤0.10% | ≤0.1% |
Chloride | ≤0.020% | ≤0.02% |
Heavy Metals | ≤10ppm | ≤0.001% |
Iron | ≤10ppm | / |
Sulfate | ≤0.020% | ≤0.02% |
lead[Pb] | / | / |
Arsenic | ≤1ppm | ≤0.0001% |
Ammonium | ≤0.02% | ≤0.02% |
Other amino acids | None | / |
Pyrongen | Conforms | / |
Clear and colorless | / | Clear, colorless |
Related substance | / | Meets with the requirements |
Particle size | / | ≥95%--＜50um- ≥1.0%≥100um |
Manufacturing
