Product description Product description We can supply amino acid series such as: l-glutamine, l-aspartic acid, l-sodium aspartic, l-cysteine hcl monohydrate, l-cysteine hcl anhydrous, l-methionine, taurine, glycine, etc. L-methionine 63-68-3 Molecular formula: c5n11no2s Molecular weight: 149.1 Cas no: 63-68-3 Characteristics: white crystals or crystalline powder Quality standards: usp24, fcciv, aji92 Item specifications Usp28 aji92 fcc iv Appearance white crystals or crystalline powder colorless or white lustrous Plates, or a white crystalline powder, It has slight, characteristic odor. Identification infrared absorption spectrum ------- Specific optical rotation +22.4íp -+24.7íp +23.0íp -+24.0íp +21.0íp -+25.0íp State of solution ------- í² 98.0% soluble in water, alkali solutions (transmittance) and in dilute mineral acids Chloride(cl) ín 0.05% ín 0.02% ------ Sulfate( as so4) ín 0.03% ín 0.02% ------ Ammonium(nh4) ---------- ín 0.02% ---------- Heavy metals( as pb) ín 0.0015% ín 10ppm ín 10ppm Lead ---------- ---------- ín 10mg/kg Iron ín 10ppm ín 0.003% ---------- Arsenic( as as) ---------- ín 1ppm ---------- Other amino acids ---------- conforms ---------- Loss on drying, % ín 0.30% ín 0.20% ín 0.50% Residue on ignition ín 0.40% ín 0.10% ín 0.10% Assay 98.5-101.5% 99.0-101.0% 98.5-101.5% Ph value 5.6-6.1 5.6-6.1 ----------- O. V. 1 meet the requirements ----------- ----------- Packaging and storage: in 25kgs fiber drum double polyethylene bags inside; preserve in well-closed containers, at controlled room temperature. Recommended limit: 1 year. More product features Trademark: gg Model no.: 63-68-3 Standard: usp24, fcciv, aji92 Productivity: 15 tons Origin: china Packing: 25kg/drum Classification: food additives