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膦苯二酚紫由Vodak等合成,并由Malat等首先采用为EDTA滴定的指示剂,此后在EDTA滴定中应用很广。Ryba等对膦苯二酚紫的离解进行研究并测定离解常数。Cifka等对某些二价金属离子与膦苯二酚紫的络合物的结构和性质进行研究,Ryba等对某些三价和四价金属离子与膦苯二酚紫的络合物进行研究,但对钍的络合物研究还不深刻。
Phthalocyanin violet was synthesized by Vodak et al. And was first used by Malat et al. As an indicator for EDTA titration and thereafter for a wide range of EDTA titrations. Ryba et al. Studied the dissociation of phlorizin violet and determined the dissociation constants. Cifka et al. Studied the structure and properties of some complexes of divalent metal ions with phosgenol. Ryba et al. Studied the complexation of some trivalent and tetravalent metal ions with phosgenol , But the study of thorium complexes is not yet profound.