6533b86efe1ef96bd12cac3e

RESEARCH PRODUCT

Solubility of some calcium-carboxylic ligand complexes in aqueous solution

Antonio GianguzzaAlessandro De RobertisSilvio Sammartano

subject

Thermogravimetrychemistry.chemical_compoundAqueous solutionLigandIonic strengthChemistryInorganic chemistryProtonationQualitative inorganic analysisCarboxylateSolubilityAnalytical ChemistryNuclear chemistry

description

Insoluble species were identified in the systems Ca(2+)-hemimellitate, Ca(2+)-1,2,3,4-butanetetracarboxylate and Ca(2+)-citrate, and their solubilities were determined in aqueous solution at T = 25 degrees C. Values of pK(s0) were obtained for the species CaLH (L = benzene-1,2,3-tricarboxylate or hemimellitate), Ca(2)L (L = 1,2,3,4-butanetetracarboxylate), CaLH and Ca(3)L(2) (L = citrate), together with their dependence on ionic strength. Solid compounds were also characterized by thermogravimetry. The complex formation in solution for the system Na(+) - and Ca(2+)-hemimellitate was studied too.

yearjournalcountryeditionlanguage
1994-09-12Talanta
https://doi.org/10.1016/0039-9140(95)01624-4