Mixtures of cyclohexyl acetate and cyclohexanol were used as a mixed solvent to study liquid-liquid equilibria (LLE) of the acetic acid-water-cyclohexanol-cyclohexyl acetate quaternary system. The solubility diagram and tie-line data were determined at 298±0.20 K and atmospheric pressure, using various compositions of mixed solvent. Reliability of the data was ascertained by making Othmer-Tobias and Hand plots.
liquid-liquid equilibria; mixed solvent; tie-line
| a1, b1 | Othmer-Tobias equation constant |
| a2, b2 |
Hand equation constant |
| nD | refractive index |
| Di | distribution coefficient of the ith component |
| S | separation factor |
| Wi |
weight fraction of the ith component |
| W11 | weight fraction of water (1) in the aqueous phase |
| W21 | weight fraction of acetic acid (2) in the aqueous phase |
| W31 | weight fraction of mixed solvent (3) in the aqueous phase |
| W13 | weight fraction of water (1) in the solvent phase |
| W23 | weight fraction of acetic acid (2) in the solvent phase |
| W33 | weight fraction of mixed solvent (3) in the solvent phase |
