Thermodynamics Research Center / ThermoML | International Journal of Thermophysics

Properties of Perfluorobenzene near the Critical Point

Stankus, S. V., Khairulin, R. A.
Int. J. Thermophys. 2006, 27, 4, 1110-1122
ABSTRACT
The density of vapor and liquid perfluorobenzene along the liquid-vapor coexistence curve has been studied by a gamma-ray attenuation technique over the temperature range from 299 to 517 K. According to measurements, the coordinates of the critical point are TC = 516.66 0.05 K and C = 550.5 2 kg m-3. The critical exponent of the coexistence curve equals 0.343 0.005, which agrees closely with the non-classical value. The results of our measurements were compared with data available in the literature. The height dependence of the density of a two-phase sample was investigated in relation to the temperature and time. These experiments made it possible to determine the isothermal compressibility of liquid and vapor phases near the critical point.
Compounds
# Formula Name
1 C6F6 hexafluorobenzene
Datasets
The table above is generated from the ThermoML associated json file (link above). POMD and RXND refer to PureOrMixture and Reaction Datasets. The compound numbers are included in properties, variables, and phases, if specificied; the numbers refer to the table of compounds on the left.
Type Compound-# Property Variable Constraint Phase Method #Points
  • POMD
  • 1
  • Mass density, kg/m3 ; Liquid
  • Temperature, K; Liquid
  • Liquid
  • Gas
  • gamma-ray densimeter
  • 18
  • POMD
  • 1
  • Mass density, kg/m3 ; Gas
  • Temperature, K; Gas
  • Gas
  • Liquid
  • gamma-ray densimeter
  • 15