L-Methionine

Product Name: L-Methionine CAS NO.: 63-68-3 Quality Standard: AJI92 Description: white crystal or crystalline powder, freely soluble in water Solubility (H2O, g/100g): 14.8 (20o), 31.9 (40o), 64.0 (60o) Test ItemsLimitIdentification Specific rotation State of Solution (Transmittance) Chloride(CL) Ammonium(NH4) Sulfate(SO4) Iron(Fe) Heavy metals(Pb) Arsenic(AS2 O3) Other amino acids Loss on drying Residue on ignition (sulfated) Assay PH Conforms +23.0° -+24.5° Clear and colorless Not less than 98.0% not more than 0.020% not more than 0.020% not more than 0.020% not more than 10ppm not more than 10ppm not more than 1ppm Chromatographicall not detectable not more than 0.20% not more than 0.10% 99.0% 100.5% 5.6 to 6.1 Storage: Preserve in tight containers at controlled room temperature. Recommended limit: 2 years