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

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Abstract

The thermal effects of the neutralization of betainic protons of trimethylenediamine-N,N,N′,N′-tetraacetic acid (H4L) at 298.15 K and ionic strength of 0.3, 0.5, and 1.0 (KNO3) were directly measured by calorimetry. The standard thermodynamic characteristics of the protolytic equilibria of H4L were calculated from a combination of thermochemical and potentiometric data obtained under identical experimental conditions. The results obtained were compared with the corresponding data for related compounds taking into account the specific structure of diamine complexones.

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Authors and Affiliations

  1. Ivanovo State University of Chemical Technology, pr. F. Engel’sa 7, Ivanovo, 153460, Russia

    S. N. Gridchin

  2. Ivanovo State University, Ivanovo, Russia

    D. F. Pyreu

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  1. S. N. Gridchin
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  2. D. F. Pyreu
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Correspondence to S. N. Gridchin.

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Original Russian Text © S. N. Gridchin, D. F. Pyreu, 2008, published in Zhurnal Obshchei Khimii, 2008, Vol. 78, No. 3, pp. 389–392.

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Gridchin, S.N., Pyreu, D.F. Thermodynamic characteristics of protolytic equilibria of trimethylenediamine-N,N,N′,N′-tetraacetic acid. Russ J Gen Chem 78, 372–375 (2008). https://doi.org/10.1134/S1070363208030067

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  • DOI: https://doi.org/10.1134/S1070363208030067

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