外观Appearance                                    类白色粉末

红外光谱鉴别Infrared spectrometry       和对照匹配

纯度Purity                                             ≥98.0% (HPLC)

纯度Purity                                             98.5% - 101.5%（非水滴定） 

熔点Melting point                                   131°C - 134°C

干燥损失Loss on drying                         <0.5 %

硫酸盐灰分Sulfated ash                         <0.5 %