• The vapor–liquid equilibrium of R1243zf in PEC7 and PEC9 were measured. • The NRTL model was utilized to model the experimental values. • Henry's law constants for the two mixtures were determined and analyzed. Vapor-liquid equilibrium measurements for 3, 3, 3‑trifluoropropene (R1243zf) with pentaerythritol tetraheptanoate (PEC7) and pentaerythritol tetranonanoate (PEC9) were performed using isochoric saturation method over temperatures from 278.15 K to 343.15 K and pressures up to 1.0 MPa. The experimental data were regressed by non-random two liquid (NRTL) activity coefficients model. In addition, the dissolving abilities of different refrigerants (R1243zf, R600a, RE170, R1234ze(E), R152a, R134a, R1234yf) in PEC7 and PEC9 were compared and analyzed. [ABSTRACT FROM AUTHOR]