A. Derobertis et al., BINDING OF BENZENEHEXACARBOXYLIC ANION BY PROTONATED DIETHANOLAMINE AND ETHYLENEDIAMINE, IN AQUEOUS-SOLUTION, Journal of chemical research. Synopses, (1), 1996, pp. 60-61
The benzenehexacarboxylic anion forms fairly stable complexes with pro
tonated amines, the stability of which is comparable to that of comple
xes of the polycarboxylic ligand with alkali and alkaline earth metals
.