Thermodynamic Properties of 1,1,1,2,2,4,5,5,5-nonafluoro-4-(trifluoromethyl)-3-pentanone: Vapor Pressure, (p, ¿, T) Behavior, and Speed of Sound Measurements, and Equation of State

Published

September 30, 2015

Author(s)

Mark O. McLinden, Richard A. Perkins, Eric W. Lemmon, Tara J. Fortin

Abstract

We report comprehensive thermodynamic property measurements of 1,1,1,2,2,4,5,5,5-nonafluoro-4-(trifluoromethyl)-3-pentanone. The p–ρ–T behavior was measured from T = (225 to 470) K with pressures up to 36 MPa using a two-sinker densimeter. These measurements include compressed-liquid states and the extended critical region. The vapor-phase speed of sound was measured from T = (325 to 500) K with pressures up to 1.7 MPa using a spherical acoustic resonator. The vapor pressure was measured in the spherical resonator from T = (325 to 440) K using a static technique. The density and speed of sound of the liquid was measured from T = (278 to 308) K at atmospheric pressure (p = 83 kPa) in a bench-top instrument employing a vibrating-U-tube densimeter and a time-of-flight speed-of-sound technique. These data, together with selected data from the fluid manufacturer, have been used to develop an equation of state explicit in the Helmholtz energy covering the fluid region. Comparisons to experimental data are given to establish the accuracy of the equation of state. This fluid is of interest as the working fluid in Rankine-cycle power applications and as a fire extinguishing agent; it is also known by the trade names Novec-649 and Novec-1230

Citation

Journal of Chemical and Engineering Data

Volume

60

Pub Type

Journals

Download Paper

https://doi.org/10.1021/acs.jced.5b00623

Keywords

density, equation of state, fluorinated ketone, measurements, 1, 1, 1, 2, 2, 4, 5, 5, 5-nonafluoro-4-(trifluoromethyl)-3-pentanone, speed of sound, vapor pressure

Citation

McLinden, M. , Perkins, R. , Lemmon, E. and Fortin, T. (2015), Thermodynamic Properties of 1,1,1,2,2,4,5,5,5-nonafluoro-4-(trifluoromethyl)-3-pentanone: Vapor Pressure, (p, ¿, 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.5b00623 (Accessed October 9, 2025)