A1 Refereed original research article in a scientific journal
INTERACTION OF PYROPHOSPHATE ION WITH DI-AMINES, TRI-AMINES AND TETRAAMINES IN AQUEOUS-SOLUTION - A POTENTIOMETRIC AND CALORIMETRIC STUDY
Authors: LABADI I, JENEI E, LAHTI R, LONNBERG H
Publisher: MUNKSGAARD INT PUBL LTD
Publication year: 1991
Journal:: Acta Chemica Scandinavica
Journal name in source: ACTA CHEMICA SCANDINAVICA
Journal acronym: ACTA CHEM SCAND
Volume: 45
Issue: 10
First page : 1055
Last page: 1059
Number of pages: 5
ISSN: 0904-213X
DOI: https://doi.org/10.3891/acta.chem.scand.45-1055
Abstract
Successive macroscopic pK(a) values have been determined potentiometrically for the conjugate acids of spermidine (4-azaoctane-1,8-diamine), spermine (4,9-diazadodecane-1,12-diamine) and some acylic diamines at various ionic strengths in the absence and presence of tetrasodium pyrophosphate. The stability of the amine/pyrophosphate adducts have been estimated on the basis of effects of the pyrophosphate ion on the apparent acidity constants of the amines. Stoichiometry and thermodynamics of adduct formation have been elucidated from microcalorimetric measurements.
Successive macroscopic pK(a) values have been determined potentiometrically for the conjugate acids of spermidine (4-azaoctane-1,8-diamine), spermine (4,9-diazadodecane-1,12-diamine) and some acylic diamines at various ionic strengths in the absence and presence of tetrasodium pyrophosphate. The stability of the amine/pyrophosphate adducts have been estimated on the basis of effects of the pyrophosphate ion on the apparent acidity constants of the amines. Stoichiometry and thermodynamics of adduct formation have been elucidated from microcalorimetric measurements.
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