Abstract: Gaseous pressure-volume-temperature (PVT) properties were measured at temperatures from 371.21 to 413.29 K and corresponding pressures from 1.2445 to 4.9718 MPa. An isochoric cell apparatus was used in the present measurements with uncertainties estimated to be ±1.5 kPa for pressure and ±6 mK for temperature. Comparison of the measured PVT data with the reported virial-type equation of state showed satisfactory agreement within ±0.28% in pressure and within ±0.33% in density. The purity of the HFC-161 sample used in this work was 99.74 mass %.

Key words: PVT properties, Equation of state, HFC-161

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