L-Methionine
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Molecular Structure
Detailed Description
Appearance:White crystal powder
Assay:(on dry basis):98.5%~101.5%
Identification:A.infrared absorption
Residue on ignition≤0.4%
Chloride≤0.05%
Sulfate ≤0.03%
Iron≤30ppm
Related compound≤0.0001%
Individual impurity≤0.5%
Total impurity ≤2.0%
Specific rotation:+22.4o~ +24.7o
PH:5.6-6.1
LOSS ON DRYING≤0.3%