Add time:08/17/2019         Source:sciencedirect.com

In this paper, the measured solubility data and the discussion of thermodynamics for 1-naphthoic acid in common solvents are presented. The gravimetric method was utilized here for obtaining the solubility of 1-naphthoic acid under atmospheric pressure in nine pure and binary mixed solvents from T = (293.15 to 333.15) K. The tested values were regressed by Wilson, NRTL, UNIQUAC, λh, van't Hoff and Apelblat equations. It was figured out that temperature exerted obvious influence on the solubility of 1-naphthoic acid and the five equations had satisfactory accordance with experimental data. Furthermore, the parameters of models and enthalpy, entropy and Gibbs free energy of dissolution were computed and illustrated at the same time. The results may supply a basic theoretical guidance for industry.

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