Experimental measurement of vapor-liquid equilibria (VLE) was performed for 2,3,3,3-tetrafluoropropene (HFO-1234yf) 1,1,1,2,2-pentafluoropropane (HFC-245cb) system. The VLE data were measured by a static-analysis apparatus at temperatures ranging from (283.15-313.15) K. Within the experimental temperature range, the binary system was slightly non-ideal; no azeotropic behavior was observed. Experimental results were correlated based on equations of state (EOS) method. Peng-Robinson EOS and van der Waals mixing rules were used to calculate both vapor and liquid phase fugacity coefficient. Correlation deviation was acceptable and thermodynamic consistency was well satisfied. (C) 2016 Elsevier B.V. All rights reserved.