该品为无色或白色结晶性粉末。易溶于水，水溶液呈酸性。极微溶于乙醇，不溶于醚。无气味。
 

    
        
            
            
Item
            
            
            
Standard
            
        
        
            
            
Appearance
            
            
            
White to white a yellow cast powder
            
        
        
            
            
State of solution
            
(Transmittance)
            
            
            
Clear and colorless
            
Not less than 98.0%
            
        
        
            
            
Chloride (Cl)
            
            
            
16.58 to 17.00%
            
        
        
            
            
Ammonium (NH4)
            
            
            
Not more than 0.02%
            
        
        
            
            
Sulfate (SO4)
            
            
            
Not more than 0.020%
            
        
        
            
            
Iron (Fe)
            
            
            
Not more than 20ppm
            
        
        
            
            
Heavy metal(Pb)
            
            
            
Not more than 10ppm
            
        
        
            
            
Arsenic(As2O3)
            
            
            
Not more than 1ppm
            
        
        
            
            
Other amino acids
            
            
            
Chromatographically 
            
Not detectable
            
        
        
            
            
Loss on drying
            
            
            
Not more than 0.20%
            
        
        
            
            
Residue on ignition(sulfated)
            
            
            
Not more than 0.10%
            
        
        
            
            
Assay
            
            
            
98.5 to101.0%
            
        
    

该品为氨基酸类药物
密封室内保存