Name:N-Acetyl-L-Cysteine    
Molecular Formula C 5 H 9 NO 3 S
Molecular Weight 163.19
CAS NO:616-91-1 
 
Specification:
Appearance
 White crystals or crystalline powder
 
 
Assay
 98.5~101.0%
 
 
PH
 2.0~2.8
 
 
Specific rotation[a]D20°
 +5.5°+7.0°
 
 
State of solution
 ≥98.0%
 
 
Chloride(Cl)
 ≤0.04%
 
 
Ammonium(NH 4 )
 ≤0.02%
 
 
Iron(Fe)
 ≤20PPm
 
 
Heavy metals(Pb)
 ≤10PPm
 
 
Arsenic(As2O3)
 ≤1PPm
 
 
Other amino acids
 Conforms
 
 
Loss on drying
 ≤0.5%
 
 
Residue on ignition
 ≤0.20%
 
 
Melting point
 106~110°
 
 
Organic volatile impurities
 
 
 

Packing:Net weight 25kg/bag
Storaga:be stored in shady and cool place