The chemical system of water + acetic acid + kerosene is frequently used in different liquid−liquid extraction studies. Accordingly, a comprehensive knowledge about this system is essential. The present study reports the capabilities of kerosene in extracting acetic acid from aqueous solutions at conventional temperatures of 293.2, 298.2, and 308.2 K and under an ambient pressure of 81.5 kPa. The cloud point method and refractive index measurement were employed in experiments. The distribution coefficient of the solute was within (0.0536−0.1161) and the important separation factor was within (5.07−82.84). The upper limit values in the ranges of the latter parameter were 1.36−8.80 times of those with other solvents. The distribution coefficient increased with temperature, but the separation factor diminished. The provided data were reproduced with the nonrandom two-liquid and universal quasichemical activity coefficient models, and the corresponding binary interactions were determined at each temperature. In this regard, a surrogate of kerosene, consisting of 80 wt % n-decane and 20 wt % 1,2,4-trimethylbenzene, was considered. The root mean square deviations of, respectively, (0.0035−0.0057) and (0.0056−0.0067) and also other criteria revealed good agreements between experimental and predicted values.
