Vapor-liquid equilibrium data for the binary systems of carbon monoxide (CO) + diethyl carbonate (DEC) and carbon monoxide + ethyl acetate (EA) were measured at temperatures of 293.2 K, 313.2 K and 333.2 K and the elevated pressures up to 12.00 MPa. The measurements were carried out in a cylindrical autoclave with a moveable piston and an observation window. The experimental data were correlated using the Peng-Robisom (PR) equation of state (EOS) and Peng-Robinson-Stryjek-Vera (PRSV) equation of state with the two-parameter van der Waals II or Panagiotopoulos-Reid mixing rule. The interaction parameters were obtained while correlating. The comparison between calculation results and experimental data indicated that the method of PRSV equation of state with van der Waals II produced the better correlated results. (C) 2009 Elsevier B.V. All rights reserved.