品级Grade                               分析纯  
                                        (AR)
游离邻甲酚磺酞                          合格  
分光有效含量，%                         ≥75.0  
对锌灵敏度试验                          合格  
灼烧残渣，%                             25.0～30.0  


品级Grade                               高纯级  
外观Appearance                          红棕色结晶性粉末
红外光谱鉴别Infrared spectrometry       Conforms
λ max.                                  433.0 ～ 437.0 nm(H2O)
Absorbance                              ≥0.210(1g/L, H2O, 433.0 to 437.0 nm)(after drying)
对离子灵敏性试验Sensitiveness test      pass