品级Grade                               分析纯  
                                        (AR)
水溶液反应Aqueous reaction              合格
熔点Melting point                       121°C - 123°C
乙醇溶解试验solubility in EtOH          合格
灼烧残渣(以硫酸盐计)Ignition residue,%  ≤0.05
游离酸Free acids,%                      合格        
不含萘之试验Naphthalene                 合格        
不含1-萘酚试验1-Naphthol                合格


品级Grade                               荧光指示剂  
                                  (fluorescence indicator, ≥99.0%)
外观Appearance                          浅紫色至褐色或棕色粉末、薄片
红外光谱鉴别Infrared spectrometry       Conforms to Structure
纯度Purity                              ≥99.0% (GC)  
熔点Melting point                       121°C - 125°C
醇溶解试验Solubility in EtOH            Clear
1-萘酚1-naphthol                        ≤0.5%
荧光fluorescence                        λex 281 nm; λem 419 nm in 0.1 M NaOH

溴、氯、氯酸盐、铌、铜、亚硝酸盐和钾的检定。酚磺转移酶的荧光测定底物。酸碱指示剂, 染料, 有机合成, 烯丙醇、甲醇、氯仿等的定性测定。一氧化碳、乙醇吸收剂，荧光指示剂。