In this work, the solubility of ethylene in methyl propionate was measured within a temperature range of 283.5-464.8 K and pressures up to 10.7 MPa. Experiments were carried out using the Cailletet apparatus, which uses a synthetic method for the experiments. The critical points of several isopleths have also been determined experimentally for this system. The Peng-Robinson equation of state was used to predict the solubility of ethylene in methyl propionate. The absolute average deviation for all of the calculated points was 5.8%. (C) 2014 Elsevier B.V. All rights reserved.