Abstract
Vapor pressures and saturated liquid densities of HFO1234ze(E) (trans-1,3,3,3-tetrafluoropropene) were measured at temperatures from 253.343 to 293.318 K by a compact single-sinker densimeter. The accuracy of the densimeter was verified by the experimental performance of HC290 (propane) at temperatures from 253.432 to 293.312 K. The standard uncertainties of HFO1234ze(E) in temperature, pressure and density were estimated to be less than 5 mK, 1 kPa and 0.01%, respectively. Comparisons were made between the present vapor pressures and other experimental data available in the open literature, and good agreement was found, while the saturated liquid densities were reproduced by five equations of state in Wagner-type or Rackett-type, and good agreement was found among them. Finally, two recommended equations for saturated liquid densities of HFO1234ze(E) were obtained with a valid temperature range from 251.450 to 382.504 K.
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