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Scientific article
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Cadmium Succinate and Cadmium Malate Stability Constants Revisited

Published inJournal of Chemical & Engineering Data, vol. 44, no. 5, p. 1009-1019
Publication date1999
Abstract

The complexes formed in the cadmium(II) succinate (suc2-) hydrogen ion and in the cadmium(II) malate (mal2-) hydrogen ion systems in aqueous solution at 37 °C and I = 150 mmol·dm-3 (NaCl) have been characterized by means of glass-electrode potentiometry. The succinate and malate protonation constants were found to be 5.187 ± 0.001, 9.135 ± 0.002 and 4.618 ± 0.001, 7.804 ± 0.002, respectively. The formation constants for the complexes Cdsuc, CdsucH+, and Cdmal were found to be 1.63 ± 0.02, 6.26 ± 0.06, and 1.25 ± 0.05, respectively. Particular attention has been paid to the evaluation of the effect of possible systematic errors on the constant values determined. Reliable standard deviation estimations have been made by applying a Monte Carlo calculation technique. Cyclic voltammograms and differential pulse polarograms for both cadmium(II) systems were consistent with formation of weak, labile complexes.

Citation (ISO format)
FILELLA, Montserrat, TOWN, Raewyn M., BUGARÍN, Mercedes García. Cadmium Succinate and Cadmium Malate Stability Constants Revisited. In: Journal of Chemical & Engineering Data, 1999, vol. 44, n° 5, p. 1009–1019. doi: 10.1021/je990048w
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ISSN of the journal1520-5134
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