DL-Methionine
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 |
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