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Thermodynamic characteristics of protolytic equilibria of hexamethylenediamine-N,N,N′,N′-tetraacetic acid

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Abstract

The heats of dissociation of betaine groups of hexamethylenediamine-N,N,N′,N′-tetraacetic acid (H4L) at 298.15 K and the ionic strengths of 0.1, 0.5, and 1.0 (KNO3) were determined by direct calorimetry. The standard thermodynamic characteristics of the ptotolytic equilidria of H4L were calculated using the results from thermochemical and potentiometric measurements made under identical test conditions.

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Authors and Affiliations

  1. Ivanovo State University of Chemical Technology, Ivanovo, 153000, Russia

    S. N. Gridchin

  2. Ivanovo State University, Ivanovo, 153002, Russia

    D. F. Pyreu

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  1. S. N. Gridchin
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  2. D. F. Pyreu
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Original Russian Text © S.N. Gridchin, D.F. Pyreu, 2011, published in Zhurnal Fizicheskoi Khimii, 2011, Vol. 85, No. 4, pp. 788–791.

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Gridchin, S.N., Pyreu, D.F. Thermodynamic characteristics of protolytic equilibria of hexamethylenediamine-N,N,N′,N′-tetraacetic acid. Russ. J. Phys. Chem. 85, 706–709 (2011). https://doi.org/10.1134/S0036024411040108

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  • DOI: https://doi.org/10.1134/S0036024411040108

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