Thermodynamics Research Center / ThermoML | Journal of Chemical Thermodynamics

Critical behavior of binary mixture of {x C6H5CN + (1 - x) CH3(CH2)12CH3}: Measurements of coexistence curves, turbidity, and heat capacity

Yin, T.[Tianxiang], Lei, Y.[Yuntao], Huang, M.[Meijun], Chen, Z.[Zhiyun], Mao, C.[Chunfeng], An, X.[Xueqin], Weiguo, S.[Shen]
J. Chem. Thermodyn. 2011, 43, 5, 656-663
ABSTRACT
(Liquid + liquid) coexistence curve, turbidity, and isobaric heat capacity per unit volume for the critical solution of {benzonitrile + n-tetradecane} have been measured. The critical exponents beta, nu, gamma, and alpha and system-dependent critical amplitudes B, xi_0, chi_0, and A+-, corresponding to the difference of the general density variable of two coexisting phases delta-rho the correlation length xi, the osmotic compressibility chi, and the isobaric heat capacity per unit volume CpV-1, have been deduced and were used to test some universal ratios. The behavior of the diameter of the coexistence curves showed good agreement with the complete scaling theory. The analysis of effective critical exponent beta_eff, which was well described by the crossover model proposed by Anisimov and Sengers, and effective critical exponent alpha_eff indicated monotonic crossover phenomena from 3D-Ising behavior to mean-field one as the temperature departed from the critical point.
Compounds
# Formula Name
1 C7H5N benzonitrile
2 C14H30 tetradecane
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
  • Refractive index (other wavelength) ; Liquid
  • Temperature, K; Liquid
  • Pressure, kPa; Liquid
  • Wavelength, nm; Liquid
  • Liquid
  • Standard Abbe refractometry
  • 8
  • POMD
  • 2
  • Refractive index (other wavelength) ; Liquid
  • Temperature, K; Liquid
  • Pressure, kPa; Liquid
  • Wavelength, nm; Liquid
  • Liquid
  • Standard Abbe refractometry
  • 8
  • POMD
  • 1
  • 2
  • Upper consolute temperature, K ; Liquid mixture 1
  • Liquid mixture 1
  • Liquid mixture 2
  • Air at 1 atmosphere
  • VISOBS
  • 1
  • POMD
  • 1
  • 2
  • Upper consolute composition: mole fraction - 1 ; Liquid mixture 1
  • Liquid mixture 1
  • Liquid mixture 2
  • Air at 1 atmosphere
  • equal volume method
  • 1
  • POMD
  • 1
  • 2
  • Heat capacity at constant pressure per volume, J/K/m3 ; Liquid
  • Temperature, K; Liquid
  • Mole fraction - 1; Liquid
  • Pressure, kPa; Liquid
  • Liquid
  • Large sample (1 g) DSC
  • 120
  • POMD
  • 1
  • 2
  • Refractive index (other wavelength) ; Liquid
  • Temperature, K; Liquid
  • Mole fraction - 1; Liquid
  • Pressure, kPa; Liquid
  • Wavelength, nm; Liquid
  • Liquid
  • Standard Abbe refractometry
  • 25
  • POMD
  • 1
  • 2
  • Refractive index (other wavelength) ; Liquid mixture 2
  • Temperature, K; Liquid mixture 2
  • Pressure, kPa; Liquid mixture 2
  • Wavelength, nm; Liquid mixture 2
  • Liquid mixture 2
  • Liquid mixture 1
  • Standard Abbe refractometry
  • 17
  • POMD
  • 1
  • 2
  • Mole fraction - 1 ; Liquid mixture 1
  • Temperature, K; Liquid mixture 1
  • Pressure, kPa; Liquid mixture 1
  • Liquid mixture 1
  • Liquid mixture 2
  • Index of refraction calibration data
  • 17
  • POMD
  • 1
  • 2
  • Mole fraction - 1 ; Liquid mixture 2
  • Temperature, K; Liquid mixture 2
  • Pressure, kPa; Liquid mixture 2
  • Liquid mixture 2
  • Liquid mixture 1
  • Index of refraction calibration data
  • 17
  • POMD
  • 1
  • 2
  • Refractive index (other wavelength) ; Liquid mixture 1
  • Temperature, K; Liquid mixture 1
  • Pressure, kPa; Liquid mixture 1
  • Wavelength, nm; Liquid mixture 1
  • Liquid mixture 1
  • Liquid mixture 2
  • Standard Abbe refractometry
  • 17