Thermodynamics Research Center / ThermoML | Journal of Chemical and Engineering Data

ABSTRACT

The solubility of sodium thioglycolate in five pure solvents of water, methanol, ethanol and isopropanol, n-propanol and four binary solvent mixtures (water + methanol, water + ethanol, water + isopropanol, water + n-propanol) was determined within the temperature range from 293.15 to 333.15 K by using the gravimetrical method under atmospheric pressure (p = 0.1 MPa). The solubility of sodium thioglycolate in water, ethanol, isopropanol and n-propanol increases with a rise of temperature, but the solubility decreases in methanol with increasing the temperature. Meanwhile, in the binary solvent mixtures (water + methanol, water +ethanol, water + isopropanol, water + n-propanol), the solubility of sodium thioglycolate increases with increasing the mole fraction of water and temperature. The modified Apelblat equation and van t Hoff equation were applied to correlate the solubility of sodium thioglycolate in the five pure solvents. While in the binary solvent mixtures, the solubility was correlated by the modified Apelblat equation, CNIBS/R-K model, and Jouyban Acree model. It was shown that the correlated results were in better agreement with the experimental data. Also, the mixing thermodynamic properties for sodium thioglycolate in the binary solvent mixtures were calculated.