DL-Methionine, CAS No.59-51-8, is a essential amino acid manufactured by chemical synthesis. L-methionine is manufactured by optical resolution of the DL-Methionine. Function and uses: used in hepatic therapeutics and drugs for preventing hepatic impairments. L-methionine is used as a nutritive supplement in infant milk preparations, health foods and as a component of sports supplements. As an experienced DL-Methionine manufacturer and supplier, we has been supplying and exporting DL-Methionine for almost 10 years, please be assured to buy from us. Any inquiries about price and the market trend please feel free to contact us, we will reply you within 1 working day. DL-Methionine Food Feed grade Specification ITEM STANDARD Appearance White Crystalline Powder Assay (on dry matter) % 98.5-101.5 Clarity of Solution Clear, colorless Transmittance % 98.0 PH Value(1g/100ml in water) 5.4-6.1 Chloride(As Cl) % 0.05 Heavy Metals(As Pb) % 0.002 Lead (As Pb) % 0.001 Arsenic (As AS) % 0.00015 Sulfate(SO4) % 0.02 Ammonium( As NH4) % 0.01 Loss on drying % 0.5 Residue on ignition(as sulphate ash) % 0.1 Organic Volatile Impurities Meets the requirement