DL-Methionine

CAS No.: ******8 Other Names: DL-Methionine MF: C5H*1NO2S EINECS No.: ********1 Specifications: (Reference Standard AJI*2) Item Standard Analysis data Appearance White crystals or crystalline powder Conforms State of solution (Transmittance) Clear and colorless not less than *8.0% *8.0% Chloride (Cl) Not more than 0.**0% <0.*2% Ammonium (NH4) Not more than 0.*2% <0.*2% Sulfate (SO4) Not more than 0.**0% <0.*2% Iron (Fe) Not more than *0ppm 7ppm Heavy metal(Pb) Not more than *0ppm <*0ppm Arsenic(As2O3) Not more than 1ppm <1ppm Other Amino Acids Chromatographically Not detectable Conforms Loss on drying Not more than 0.*0% 0.2% Residue on ignition(sulfated) Not more than 0.*0% 0.*8% Assay *9.0% to **0.5% *9.0% pH 5.6 to 6.1 5.8