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IThifensulfuron methyl is a kind of herbicide and an important chemical intermediate product, Data on corresponding solid?liquid equilibrium of thifensulfuron methyl in different solvents is essential for a preliminary study of industrial applications. In this study, the solubility of thifensulfuron methyl in water, methanol, ethanol, butyl alcohol, isopropanol, acetone, acetonitrile, hexane and ethyl acetate pure solvents and the solubility in (ethanol + ethyl acetate) mixture solvents was measured in the temperature range from 278.15 K to 328.15 K. We use the gravimetric method get the solubility data, contact with the modified apelblat equation and λh equation. We can calculate and analysis thermodynamic parameters (including enthalpy, entropy, and gibbs energy) by the van't hoff analysis and gibbs equation. Calculations proves that the modified apelblat model has advantages than the other two models. In addition, the calculated thermodynamic parameters indicated that in each studied solvent the dissolution of thermodynamic models is endothermic, nonspontaneous, and an entropy-driven process. |
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Keywords:Thermodynamics; Thifensulfuron methyl; Solid-liquid equilibrium; Solid-liquid mixing; Solubility parameter; Equilibrium study |
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