Solubility of Sodium Acetate in Binary Mixtures of Methanol, 1-Propanol, Acetonitrile, and Water at 298.2 K

Abstract

The molar solubility of sodium acetate was measured in binary mixtures of methanol, 1-propanol, acetonitrile, and water along with the density of their saturated solutions at 298.2 K. The molar solubilities span a range of nearly 4 orders of magnitude from 5.53 mol·L–1 in water to 0.0014 mol·L–1 in acetonitrile, the according values for the mole fraction solubilities are 0.119 and 0.00007. For the calculation of the solubility and the density at any composition of the binary solvent mixture, a computational method is provided, based on the Jouyban–Acree model. The method uses the solubility data in the monosolvents and their density and model constants; the latter are derived by fitting the experimental data to the Jouyban–Acree model. Solubilities and densities were back-calculated, and the overall mean percentage deviations between experimental and calculated values were 9.8 % for the solubilities and 0.4 % for the densities of the saturated solutions.