Thermodynamics Research Center / ThermoML | Fluid Phase Equilibria

The liquid-liquid coexistence curves of {x 1-octyl-3-methylimidazolium hexafluorophosphate + (1-x) 1-butanol} and {x 1-octyl-3-methylimidazolium hexafluorophosphate + (1 - x) 2-butanol} in the critical region

Cui, Z.[Zhencun], Cai, D.[Dongxing], Fan, D.[Dashuang], Chen, Z.[Zhiyun], Shen, W.[Weiguo]
Fluid Phase Equilib. 2013, 348, 52-59
ABSTRACT
Coexistences curves were reported for the liquid liquid phase transition of binary solutions of the room temperature ionic liquid (RTIL) 1-octyl-3-methylimidazolium hexafluorophosphate ([C8mim][PF6]) in 1-butanol and 2-butanol. The critical amplitude B and the critical exponent beta corresponding to the coexistence curve were deduced and the values of beta were found to be consistent with the 3D-Ising value. The experimental results are also analyzed to examine the asymmetry of the diameters for the coexistence curves. These asymmetries were discussed by the complete scaling theory.
Compounds
# Formula Name
1 C12H23F6N2P 1-octyl-3-methylimidazolium hexafluorophosphate
2 C4H10O butan-1-ol
3 C4H10O butan-2-ol
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
  • 2
  • 1
  • Refractive index (Na D-line) ; Liquid
  • Temperature, K; Liquid
  • Mole fraction - 1; Liquid
  • Pressure, kPa; Liquid
  • Liquid
  • Minimum deviation angle technique
  • 80
  • POMD
  • 3
  • 1
  • Refractive index (Na D-line) ; Liquid
  • Temperature, K; Liquid
  • Mole fraction - 1; Liquid
  • Pressure, kPa; Liquid
  • Liquid
  • Minimum deviation angle technique
  • 82