白色细粉末晶体。熔点:204-206℃

    
        
            
            
Item
            
            
            
Standard
            
        
        
            
            
Appearance
            
            
            
White crystals or crystalline powder
            
        
        
            
            
State of solution
            
(Transmittance)
            
            
            
Clear and colorless
            
Not less than 95.0%
            
        
        
            
            
Chloride (Cl)
            
            
            
Not more than 0.04%
            
        
        
            
            
Ammonium (NH4)
            
            
            
Not more than 0.02%
            
        
        
            
            
Iron (Fe)
            
            
            
Not more than 30ppm
            
        
        
            
            
Heavy metal(Pb)
            
            
            
Not more than 10ppm
            
        
        
            
            
Arsenic(As2O3)
            
            
            
Not more than 2ppm
            
        
        
            
            
Other amino acids
            
            
            
No spot
            
        
        
            
            
Loss on drying
            
            
            
Not more than 0.60%
            
        
        
            
            
Residue on ignition(sulfated)
            
            
            
Not more than 0.20%
            
        
        
            
            
Assay
            
            
            
98.0 to101.0%
            
        
        
            
            
pH
            
            
            
2.5 to 3.5
            
        
    

重要的精细有机化工中间体，广泛应用于医药、农药、化学工业等领域。
 
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