EN
L-methionine is the only sulfur-containing amino acid essential for humans and animals, and it has wide applications in the pharmaceutical, food, and feed industries.
L-methionine is used in biochemical research and as a nutritional supplement, and also as an adjunct treatment for pneumonia, cirrhosis, and fatty liver.
| CERTIFICATION OF ANALYSIS | |||||||||||
| Product Name: | L- Methionine | Report Date: 2025.12.21 | |||||||||
| Manufacture Date: | 2025.12.21 | Retest Date: 2027.12.20 | |||||||||
| Batch No.: | 20251221 | Quantity: 2000kg | |||||||||
| Item | Specification | Result | |||||||||
| Appearance | White crystals or crystalline powder | Conforms | |||||||||
| Identification | Infrared Absorption | Conforms | |||||||||
| Specific rotation | +22.4 °to +24.7 ° | +23.8 ° | |||||||||
| pH | 5.6 to 6.1 | 5.80 | |||||||||
| Loss on drying | Not more than 0.30% | 0.10% | |||||||||
| Residue on ignition | Not more than 0.40% | 0.04% | |||||||||
| Chloride | Not more than 0.05% | Conforms | |||||||||
| Sulfate | Not more than 0.03% | Conforms | |||||||||
| Iron | Not more than 30ppm | Conforms | |||||||||
| Heavy metals | Not more than 15ppm | Conforms | |||||||||
| Individual impurity | Not more than 0.5% | Conforms | |||||||||
| Total impurities | Not more than 2.0% | Conforms | |||||||||
| Assay | 98.5 % to 101.5% | 99.3% | |||||||||
| Conclusion : | The Products Conforms to USP40 standard. | ||||||||||
| Packing info&Storage condition | 25KG/ Drum, packed with 2-tier polyethylene bag as inner. Keep container dry and tightly closed;Keep in a cool well-ventilated place;Keep away from heat and oxidizing agents. |
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