We present experimental
measurements of the density, speed of sound,
and vapor pressure of trans-1-chloro-3,3,3-trifluoropropene,
which is also known as R1233zd(E). Densities were measured over the
temperature range from (215 to 444) K, with pressures from (0.3 to
24.1) MPa. Sound speed data were measured at temperatures between
(290 and 420) K, with pressures from (0.07 to 2.1) MPa. Vapor pressures
span the temperature range from (280 to 438) K. The experimental data
cover the saturation curve, the vapor and liquid phases, and also
the vicinity of the critical point. Densities and vapor pressures
were measured in a two-sinker densimeter with a magnetic suspension
coupling. Sound speed data were measured with a spherical acoustic
resonator. An equation of state written in terms of the Helmholtz
energy was developed; it represents the present experimental data
with relative root-mean-square deviations of 0.020 % for densities,
0.223 % for vapor pressures, and 0.131 % for speeds of sound.
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