Chemical Name

L-Tyrosine

Molecular Structure

Molecular Formula

C9H11NO3

Molecular Weight

181.19

Characteristics

White styli form crystals with bitterness,soluble in dilute acids or base

Packing

25KG/drum,25KG/carton

Quality  Standard

AJI92/USP28/EP5/FCCIV

Specification                                                                      

Specific rotation[a]D20°          

-11.3°~-12.1°         

State of solution

≥95.0%

Heavy metals(Pb)  

≤10PPm

Residue on ignition                           

≤0.1%  

Iron(Fe)

≤10PPm

Loss on drying                              

≤0.02%  

Other amino acids                          

Conforms  

Arsenic(As2O3) 

≤1PPm

Chloride(CI) 

≤0.02%

Ammonium(NH4)

≤0.02%

Sulfate(SO4)    

≤0.02%

Assay                                  

99.0~100.5%             

PH

5.0~6.5