L-Methionine

Products > L-AMINO ACID > L-Methionine

L-Methionine

   CAS NO:63-68-3

             Chemical Name                        L-Methionine          
Molecular Structure047827e46d3ca4afb5c2c22517b10591.jpg
Molecular FormulaC5H11NO2S
Molecular Weight149.21
CharacteristicsWhite crystalline powder
Packing25㎏/drum,25㎏/carton
Quality  StandardAJI92/USP28/EP5/FCCIV
Specification
Specific rotation[a]D20°+23.0°~+24.5° 
State of solutionClear and colorless
(Tranamittance)≥98.0%
Chloride(Cl)≤0.02%
Ammonium(NH4)≤0.02%
Sulfate(SO4)≤0.020%   
Iron(Fe)≤10PPm
Heavy metals(Pb)≤10PPm  
Arsenic(As2O3)≤1PPm   
Other amio acidsConforms
Loss on drying≤0.20%
Residue on ignition (Sulfated)≤0.10%
Assay99.0~100.5%  
PH5.6~6.1