品级Grade 99.9 %
外观Appearance Grey to purple or brown powder or lumps
红外光谱鉴别Infrared spectrometry Conforms to structure
核磁共振Proton NMR Spectrum Conforms to structure
纯度Purity(titration with KMnO4) 97-103 %
痕量金属Trace analysis ICP ≤200 ppm
纯度Purity based on trace metals analysis ≥99.9 %
品级Grade 98%
外观Appearance Grey to purple or brown powder or lumps
红外光谱鉴别Infrared spectrometry Conforms to structure
纯度Purity ≥98.0 %