Ternary liquid liquid equilibria (LLE) data for water + furfural + cyclopentyl methyl ether (CPME) and quaternary LLE data for water + furfural + acetic acid + CPME were measured at T = 293.15, 303.15, and 313.15 K and atmosphere pressure (p approximate to 100.25 kPa). In addition, the LLE for the quinary system of {water + furfural + acetic acid + CPME + CaCl2} were determined at 303.15 K and atmosphere pressure to study salting effect on the quaternary system. Finally, based on researches of predecessors and our previous work, comparative study of various solvents including CPME, 2-methyltetrahydrofuran (2-MTHF), p-xylene, toluene, methyl iso-butyl carbinol (MIBC), tert-amyl methyl ether (TAME), and methyl tent-butyl ether(MTBE) was demonstrated.