Chemical Name

DL-Methionine

Molecular Structure

Molecular Formula

C5H11NO2S

Molecular Weight

149.21

Characteristics

White crystalling powder 

Packing

25㎏/drum，25㎏/carton

Quality  Standard

AJI92/USP28/EP5/FCCIV

Chloride(CL) 
               Ammonium(NH4)
       Sulfate(SO4)

≤0.020%
       ≤0.02%
       ≤ 0.020%

Iron(Fe)

≤10PPm

Heavy metals(Pb)

≤10PPm

Arsenic(As2O3)

≤1PPm

Other amino acids

Chromatographically not detectable

Loss on drying

≤0.30%

Residue on ignition

≤0.10%

Assay

99.0～100.5%

PH

5.6～6.1