Chemical Name

N-Acetyl-L-Cysteine

Molecular Structure

Molecular Formula

C5H9NO3S

Molecular Weight

163.20

Characteristics

White crystalline powder

Packing

25㎏/drum，25㎏/carton

Quality  Standard

AJI92/USP28/EP5/FCCIV

Specification

Specific rotation[a]_D^20°          

+21.3 to +27.0         

State of solution

≥98.0%

Chloride(CL)

Ammonium(NH₄)

Sulfate(SO₄)

≤0.04%

≤0.02%

≤ 0.030%

Iron(Fe)

≤20PPm

Heavy metals(Pb)                           

≤10PPm  

Other amino acids                          

Chromatographically  Not detectable   

Arsenic(As2O3)        

≤1PPm              

Loss on drying

≤0.5%

Residue on ignition

≤0.20%

Assay                                  

98.5～101.0%             

PH                    

2.0～2.8

Melting point

106 to 110