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

ABSTRACT

The equilibrium solubilities of sodium 3-nitrobenzenesulfonate and sodium 4-nitrobenzenesulfonate in ethanol, acetone, 1-butanol, ethyl acetate, cyclohexanone, and tetrahydrofuran were measured experimentally by using a steady-state method at temperatures ranging from 283.15 to 323.15 K under 101.3 kPa. The solubilities of sodium 3-nitrobenzenesulfonate increased faster in ethanol than in the other solvents as the temperature increase. The order of the solubility values from high to low was: ethanol greater than acetone greater than tetrahydrofuran greater than 1-butanol greater than ethyl acetate greater than cyclohexanone. For the systems of sodium 4-nitrobenzenesulfonate + solvents, the sequence of the mole fraction solubility data was: acetone greater than ethanol greater than (cyclohexanone, 1-butanol) greater than (ethyl acetate, tetrahydrofuran). The experimental solubility data were correlated with the modified Apelblat equation and h equation. The results indicated that the calculated values via the modified Apelblat equation agreed well with experimental results for sodium 3/4-nitrobenzenesulfonate.