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

Measurement and Correlation of High Pressure Densities of Ionic Liquids, 1-Ethyl-3-methylimidazolium l-Lactate ([emim][Lactate]), 2-Hydroxyethyl-trimethylammonium l-Lactate ([(C2H4OH)(CH3)3N][Lactate]), and 1-Butyl-3-methylimidazolium Chloride ([bmim][Cl])

Machida, H.[Hiroshi], Taguchi, R.[Ryosuke], Sato, Y.[Yoshiyuki], Smith Jr., R. L.[Richard L.]
J. Chem. Eng. Data 2011, 56, 4, 923-928
ABSTRACT
Pressure-density-temperature (p?T) data for three types of ionic liquid, [emim][lactate], [(C2H4OH)(CH3)3N][lactate], and [bmim][Cl], were measured with a bellows type dilatometer at temperatures up to 452 K and at pressures up to 200 MPa. The Tait equation could correlate the density data as a function of temperature and pressure to within an average relative deviation (ARD) of 0.014 %. The thermal expansion coefficients and the isothermal compressibilities were estimated with the Tait equation, and their variations with temperature and pressure, dap/dT and dkT/dp, were found to be negative. Lattice type equations of state were applied to correlate the data. The densities could be correlated to within an ARD of 0.21 % and 0.067 %, for the Sanchez-Lacombe equation of state and the e-modified Sanchez-Lacombe equation of state, respectively. The equation-of-state parameters determined should be useful in estimating the properties of mixtures and in estimating the phase equilibria of binary and multicomponent systems.
Compounds
# Formula Name
1 C9H16N2O3 3-ethyl-1-methylimidazolium (S)-2-hydroxypropanoate
2 C8H19NO4 2-hydroxy-N,N,N-trimethylethanaminium (S)-2-hydroxypropanoate
3 C8H15ClN2 1-butyl-3-methylimidazolium chloride
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
  • Mass density, kg/m3 ; Liquid
  • Temperature, K; Liquid
  • Pressure, kPa; Liquid
  • Liquid
  • VIBTUB:UFactor:8
  • 13
  • POMD
  • 1
  • Mass density, kg/m3 ; Liquid
  • Pressure, kPa; Liquid
  • Temperature, K; Liquid
  • Liquid
  • VIBTUB:UFactor:2
  • 141
  • POMD
  • 2
  • Mass density, kg/m3 ; Liquid
  • Temperature, K; Liquid
  • Pressure, kPa; Liquid
  • Liquid
  • VIBTUB:UFactor:8
  • 13
  • POMD
  • 2
  • Mass density, kg/m3 ; Liquid
  • Pressure, kPa; Liquid
  • Temperature, K; Liquid
  • Liquid
  • VIBTUB:UFactor:2
  • 101
  • POMD
  • 3
  • Mass density, kg/m3 ; Liquid
  • Temperature, K; Liquid
  • Pressure, kPa; Liquid
  • Liquid
  • VIBTUB:UFactor:8
  • 6
  • POMD
  • 3
  • Mass density, kg/m3 ; Liquid
  • Pressure, kPa; Liquid
  • Temperature, K; Liquid
  • Liquid
  • VIBTUB:UFactor:2
  • 121