黑色结晶粉末,熔点：275℃,上不溶于水，溶于醇：: 15 G/L 乙醇 (20¢C)。

项目                                    生物染色剂                                              (BS) 外观Appearance                          黑色结晶粉末红外光谱鉴别Infrared spectrometry       和对照品匹配 紫外光谱UV spectrometry                 符合λ max.                                  565.0 - 569.0 nm(乙醇) 吸光度Absorbance(E1%1cm)                ≥350(乙醇, 565.0 - 569.0 nm)