Thermodynamics Research Center / ThermoML | International Journal of Thermophysics

Density of Vapor and Liquid Pentafluorobenzene Along the Saturation Line

Stankus, S. V., Khairulin, R. A.
Int. J. Thermophys. 2010, 31, 11-12, 2078-2085
ABSTRACT
The density of vapor and liquid pentafluorobenzene along the liquid vapor coexistence curve has been studied by a gamma-ray attenuation technique over the temperature range from 293.5K to 530.9K. According to measurements, the coordinates of the critical point are TC = (531.04 +- 0.05) Kand nC = (518.8 +- 2) kg*m.3. The critical exponent a of the coexistence curve equals 0.345 +- 0.005. 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 C6HF5 pentafluorobenzene
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
  • Critical temperature, K ; Liquid
  • Liquid
  • Gas
  • gamma-densimeter
  • 1
  • POMD
  • 1
  • Mass density, kg/m3 ; Liquid
  • Temperature, K; Liquid
  • Liquid
  • Gas
  • gamma-densimeter
  • 14
  • POMD
  • 1
  • Mass density, kg/m3 ; Gas
  • Temperature, K; Gas
  • Gas
  • Liquid
  • gamma-densimeter
  • 12