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Thermodynamic Properties of cis-1,1,1,4,4,4-hexafluorobutene [R-1336mzz(Z)]: Vapor Pressure, (p, , T) Behavior, and Speed of Sound Measurements and Equation of State

Published

Author(s)

Mark McLinden, Ryo Akasaka

Abstract

We present experimental measurements of the density, speed of sound, vapor pressure and dew- point pressure of cis-1,1,1,4,4,4-hexafluorobutene, which is also known as R-1336mzz(Z). Vapor pressures were measured at temperatures from 330 K to 440 K; the dew-point pressure was measured at T = 293.15 K. Densities were measured in the liquid and supercritical regions over the temperature range from (230 to 460) K, with pressures up to 36 MPa. Vapor-phase sound speeds were measured at temperatures between 280 K and 480 K, with pressures from (0.021 to 2.2) MPa. Densities and dew points were measured in a two-sinker densimeter with a magnetic suspension coupling. Vapor pressures were measured with a static technique in the densimeter. Sound speed data were measured with a spherical acoustic resonator. An equation of state written in terms of the Helmholtz energy was developed based on these data together with additional data from the literature; it represents the present experimental data with relative absolute average deviations (AAD) of 0.0081 % for densities, 0.027 % for vapor pressure, and 0.017 % for vapor-phase speed of sound. Literature data for liquid-phase speed of sound have an AAD of 0.023 % and for saturated liquid density data the AAD is 0.049 %.
Citation
Journal of Chemical and Engineering Data

Keywords

density, equation of state, (p, <rho>, T) behavior, R-1336mzz(Z), refrigerant, speed of sound, spherical resonator, cis-1, 1, 1, 4, 4, 4-hexafluorobutene, two-sinker densimeter, vapor pressure

Citation

McLinden, M. and Akasaka, R. (2020), Thermodynamic Properties of cis-1,1,1,4,4,4-hexafluorobutene [R-1336mzz(Z)]: Vapor Pressure, (p, <rho>, T) Behavior, and Speed of Sound Measurements and Equation of State, Journal of Chemical and Engineering Data, [online], https://doi.org/10.1021/acs.jced.9b01198 (Accessed April 18, 2024)
Created March 28, 2020, Updated December 4, 2020