Thermodynamics Research Center / ThermoML | Fluid Phase Equilibria

Speed of sound and thermodynamic properties of ternary liquid mixture octane + dodecane + hexadecane

Khasanshin, T. S.[Talgat S.], Golubeva, N. V.[Nadejda V.], Samuilov, V. S.[Vladimir S.], Shchamialiou, A. P.[Alexander P.]
Fluid Phase Equilib. 2015, 404, 161-170
ABSTRACT
The speed of sound in octane + dodecane + hexadecane liquid mixture was measured within the temperatures from 298 to 433 K and at pressures from 0.1 to 100.1 ;Pa with an uncertainty 0.1%. Deviations of speed of sound from a mole fraction average have been calculated using known symmetric and asymmetric models. Density, isobaric expansion coefficient, isobaric and isochoric heat capacity, isothermal compressibility for the liquid mixture octane + dodecane + hexadecane of six compositions were evaluated from speed of sound data in the temperature range from 298 to 393 K at pressures up to 100 ;Pa. The calculated densities were fitted with a Tait equation.
Compounds
# Formula Name
1 C8H18 octane
2 C12H26 dodecane
3 C16H34 hexadecane
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
  • 2
  • 3
  • Speed of sound, m/s ; Liquid
  • Temperature, K; Liquid
  • Pressure, kPa; Liquid
  • Mole fraction - 1; Liquid
  • Mole fraction - 2; Liquid
  • Liquid
  • time of flight with fixed path interferometer
  • 161