Chemical Name

L-Cysteine HCL MONO 

Molecular Structure

Molecular Formula

C3H7NO2S·HCL·H2O

Molecular Weight

175.63

Characteristics

White crystalline powder,tasteless,easily soluble in water but insoluble in alcohol and ether

Packing

25㎏/drum，25㎏/carton

Quality Standard

AJI92/USP28/EP5/FCCIV

Specification                                                                     

Specific rotation[a]D20°          

+5.5°～+7.0°

+8.0～+10.1°

Calc.as.cysteine       

State of solution

Clear and colorless

Heavy metals(Pb)  

≤10PPm

Residue on ignition                           

≤0.1%  

Iron(Fe)

≤10PPm

Loss on drying                              

8.5～12.0％  

Other amino acids                          

Chromatographically not detectable  

Arsenic(As2O3) 

≤1PPm  

Chloride(CI) 

19.89～20.29％

Ammonium(NH4)

≤0.02%

Sulfate(SO4)    

≤0.02%

Assay                                  

99.0～100.5%             

PH

1.5～2.0