White powder            熔点 142-147 °C
 

    
        
            
            
Items
            
            
            
Standard
            
        
        
            
            
Appearance
            
            
            
White powder
            
        
        
            
            
IR Spectrum
            
            
            
In accordance with structure
            
        
        
            
            
Related Substance (TLC)
            
            
            
One spot
            
        
        
            
            
Melting Point (℃)
            
            
            
142to147℃
            
        
        
            
            
Loss on Drying
            
            
            
Not more than 0.50%
            
        
        
            
            
Related Impurity
            
            
            
Not more than 0.1%
            
        
        
            
            
Purity (PHLC)
            
            
            
Not less than 98.5%