Gaseous pρTx properties for binary mixtures of HFO1234ze(E) + HC290

• Gaseous pρTx data for HFO1234ze(E) + HC290 were measured.
• New gaseous pρT data for HFO1234ze(E) and HC290 were measured, respectively.
• Measurements were performed by a compact single-sinker densimeter.
• Experimental results were correlated with a truncated virial equation of state.

The pρTx properties for binary mixtures of trans-1,3,3,3-tetrafluoropropene (HFO1234ze(E)) + propane (HC290) were performed in the gaseous phase by a compact single-sinker densimeter. The experimental measurements covered temperatures from (258.146 to 293.353) K, pressures from (0.0989 to 0.8255) MPa, and compositions from (0.1680 to 0.8949) mole fractions of HFO1234ze(E). The standard uncertainties in this work were estimated to be within 5 mK for temperature, 200 Pa for pressure, 0.0003 for compositions and 0.06% for density. A truncated virial equation of state was employed to correlate the present experimental pρTx data. Good agreement with the virial equation for the experimental pressures and densities were found with average absolute relative deviations of 0.051% and 0.055%, respectively. In addition, the truncated virial equation with six different combinations of empirical correlating methods for the second and the third virial coefficients were used to predict the experimental densities of HFO1234ze(E), HC290 and their mixtures, where good agreement were also found.