Abstract: Experimental solubility and tie-line data for the ternary system of (water + phosphoric acid + amyl acetate) were measured at T = 308.2 K and ambient pressure. Data for the binodal curve were determined by cloud-point titration method. The concentration of each phase was determined by acidimetric titration, the Karl–Fischer technique, and refractive index measurements. A type-1 LLE phase diagram was obtained for this ternary system [1]. The reliability of the experimental data was determined through the Othmer–Tobias plot. Distribution coefficients and separation factors were evaluated over the immiscibility region
