CAS number： 59-51-8
Molecular formula： C5H11NO2S
molecular weight： 149.21
Chemical structure：
| Product Name： | DL-Methionine | |
| Shelf life | 2 years | |
| Appearance | White crystalline powder | White crystalline powder |
| (C5H11NO2S) ,% % (on dried basis) | 99.0～101.0 | 99.5 |
| Clear and colorless | Clear, colorless | Clear, colorless |
| pH value (2% w/v solution) | 5.4~6.1 | 5.62 |
| Heavy metals (as Pb),% | ≤0.001 | ＜0.001 |
| Sulfate (SO4-2) ,% | ≤0.02 | ＜0.02 |
| Chloride(as Cl),% | ≤0.02 | ＜0.02 |
| Loss on drying,% (100~105℃) | ≤0.5 | 0.21 |
| Residue on ignition (as sulphate ash) ,% | ≤0.1 | 0.04 |
| Conclusion：This product conforms to requirements of EP5standard. | ||
