Thermodynamics Research Center / ThermoML | Journal of Chemical Thermodynamics

Thermodynamic properties of cumene, tert-butylbenzene, and n-hexadecane under elevated pressures

Khasanshin, Talgat S., Samuilov, Vladimir S., Shchamialiou, Alexander P., Dragoescu, Dana, Sirbu, Florinela
J. Chem. Thermodyn. 2019, 134, 96-105
ABSTRACT
The speeds of sound in liquid cumene and tert-butylbenzene were measured over the temperature range from 293.15 K to 433.15 K under pressures up to 100.1 MPa, relative combined expanded uncertainty in the measurement of the speed of sound is 0.001 for 0.99 level of confidence. A method for the calculation of the thermodynamic properties of liquids is described. The values of the isobaric heat capacity, isochoric heat capacity, isobaric expansion coefficient, isothermal and isentropic compressibilities have been calculated for n-hexadecane at temperatures between 298.15 K and 473.15 K at pressures up to 140 MPa, and for cumene and tert-butylbenzene over the temperature range from 298.15 K to 433.15 K and pressures up to 100 MPa.
Compounds
# Formula Name
1 C9H12 isopropylbenzene
2 C10H14 (1,1-dimethylethyl)benzene
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
  • Speed of sound, m/s ; Liquid
  • Temperature, K; Liquid
  • Pressure, kPa; Liquid
  • Frequency, MHz; Liquid
  • Liquid
  • Pulse-echo method
  • 48
  • POMD
  • 2
  • Speed of sound, m/s ; Liquid
  • Temperature, K; Liquid
  • Pressure, kPa; Liquid
  • Frequency, MHz; Liquid
  • Liquid
  • Pulse-echo method
  • 48