Chemical Name

DL-Methionine

Molecular Structure

Molecular Formula

C5H11NO2S

Molecular Weight

149.21

Characteristics

White crystalline powder

Packing

25KG/drum,25KG/carton

Quality  Standard

AJI92/USP28/EP5/FCCIV

Specification

State of solution

≥98.0%

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