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Thermodynamics of sodium diclofenac salt aqueous solutions at various temperatures

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Abstract

Enthalpies of solution and dilution of aqueous solutions of sodium diclofenac salt were measured by isoperibolic calorimeter at 293.15, 298.15, 303.15, 308.15 and 318.15 K. The concentration of the electrolyte was restricted to solubility salt at various temperatures and did not exceed 0.035–0.057 mol kg−1 values depending on the studied temperature. The virial coefficients were derived from Pitzer’s model and the excess thermodynamic functions of both the solution and the components of the solution were calculated. The analysis of thermodynamic characteristics of the solution from concentration and temperatures was carried out and discussed.

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Authors and Affiliations

  1. Institute of Solution Chemistry, Russian Academy of Sciences, 153045, Ivanovo, Russia

    N. G. Manin & G. L. Perlovich

  2. Ivanovo State University of Chemical Sciences and Technology, 153460, Ivanovo, Russia

    N. G. Manin & A. N. Manin

  3. Institute of Chemical Sciences, University of Bologna, 40127, Bologna, Italy

    A. Fini

Authors
  1. N. G. Manin
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  2. A. Fini
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  3. A. N. Manin
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  4. G. L. Perlovich
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Correspondence to G. L. Perlovich.

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Manin, N.G., Fini, A., Manin, A.N. et al. Thermodynamics of sodium diclofenac salt aqueous solutions at various temperatures. J Therm Anal Calorim 90, 147–152 (2007). https://doi.org/10.1007/s10973-006-7627-x

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  • DOI: https://doi.org/10.1007/s10973-006-7627-x

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