Thermodynamics Research Center / ThermoML | Journal of Chemical and Engineering Data

Vapor Pressures of the 1-Butyl-3-methylimidazolium Bromide + Water, 1-Butyl-3-methylimidazolium Tetrafluoroborate + Water, and 1-(2-Hydroxyethyl)-3-methylimidazolium Tetrafluoroborate + Water Systems

Kim, K.-S.[Ki-Sub], Park, S.-Y.[Seung-Yeob], Choi, S.[Sukjeong], Lee, H.[Huen]
J. Chem. Eng. Data 2004, 49, 6, 1550-1553
ABSTRACT
This work presents the vapor pressures of the following binary imidazolium-based ionic liquid (IL) + water solutions: 1-butyl-3-methylimidazolium bromide ([bmim][Br]) + water, 1-butyl-3-methylimidazolium tetrafluoroborate ([bmim][BF4]) + water, and 1-(2-hydroxyethyl)-3-methylimidazolium tetrafluoroborate ([hydemim][BF4]) + water. Vapor pressures were measured by using the boiling-point method in the temperature range of (304.8 to 475.2) K and in the concentration range of (20.0 to 80.0) mol % of ILs and were correlated with an Antoine-type equation. The resulting average absolute deviations (AAD) between the experimental and calculated values were found to be (0.419, 1.16, and 0.682) % for the [bmim][Br] + water, [bmim][BF4] + water, and [hydemim][BF4] + water solutions, respectively.
Compounds
# Formula Name
1 C8H15BrN2 1-butyl-3-methylimidazolium bromide
2 C8H15BF4N2 1-butyl-3-methylimidazolium tetrafluoroborate
3 C6H11BF4N2O 1-(2-hydroxyethyl)-3-methylimidazolium tetrafluoroborate
4 H2O water
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
  • 4
  • 1
  • Vapor or sublimation pressure, kPa ; Liquid
  • Temperature, K; Liquid
  • Mole fraction - 1; Liquid
  • Liquid
  • Gas
  • MANOM:UFactor:12
  • 64
  • POMD
  • 4
  • 2
  • Vapor or sublimation pressure, kPa ; Liquid
  • Temperature, K; Liquid
  • Mole fraction - 2; Liquid
  • Liquid
  • Gas
  • MANOM:UFactor:12
  • 49
  • POMD
  • 4
  • 3
  • Vapor or sublimation pressure, kPa ; Liquid
  • Temperature, K; Liquid
  • Mole fraction - 3; Liquid
  • Liquid
  • Gas
  • MANOM:UFactor:12
  • 44