Sulfanilamide(SN)
Veterinary drug standard of the People's Republic of China
(1992)                                                              BPC68                                          EP6                   
Property:White crystalline granule                                                                    White or light yellow to white crystalline powder
Melting point: 164.5-166.5℃                      164.5-166.5℃                              64.5-166.0℃   
Identification:
(1) (2) (3) shall comply with                        (1) (2) (3) (4) (5) shall comply with          ABCD shall comply with            
Granularity: No more than 0.5% in No. 2 screen
                      No more than 15% in No. 5 screen                   /                                  /
Acidity: ≤0.1mol/L NaOH 0.2ml            /                                                         ≤0.1mol/L NaOH 0.2ml                                         
Heavy metal: No more than ten over 10 PPM              /                                 ≤20PPM  
Content: No less than 99.0%                      ≥99.0%                                      99.0-101.0%  
Drying loss: /                                                   ≤0.5%                                        ≤0.5%  
Ferric salt: /                                                      ≤40PPM                                     /
Chloride : /                                                       ≤350PPM                                   /                                                    
Related substances : /                                  ≤0.5% (TLC)                            ≤0.5% (TLC)     
Residue on ignition: /                                     ≤0.1%                                       ≤0.1%