Journal of Chemical Thermodynamics, Vol.57, 295-300, 2013
Solubility of salicylic acid in pure alcohols at different temperatures
This work focused on the experimental measurements and the numerical calculations of the solubility of salicylic acid in various alcohols. The solubility of salicylic acid in pure alcohols was determined using a (solid + liquid) equilibrium measurement apparatus at temperatures ranging from (278.15 to 318.15) K. Also, the melting temperature and fusion enthalpy of salicylic acid were determined by a differential scanning calorimeter (TA instrument Q100). The experimental results were correlated with the equation for solubility of a solid in a liquid with the nonrandom two liquid (NRTL), universal quasi-chemical (UNIQUAC) and Wilson models for liquid phase activity coefficients to validate the quality of the data taken. Adjustable interaction parameters were also provided. The experimental data fit appropriately with all three models for the pure alcohols studied. (C) 2012 Elsevier Ltd. All rights reserved.
Keywords:(Solid plus liquid) equilibrium;Salicylic acid;Ethanol;1-Propanol;1-Butanol;1-Pentanol;1-Hexanol;1-Heptanol