Thermodynamics Research Center / ThermoML | Journal of Chemical Thermodynamics

Densities, excess volumes, isobaric expansivity, and isothermal compressibility of the (1-ethyl-3-methylimidazolium ethylsulfate + methanol) system at temperatures (283.15 to 333.15) K and pressures from (0.1 to 35) MPa

Hofman, T.[Tadeusz], Goldon, A.[Andrzej], Nevines, A.[Ashley], Letcher, T. M.[Trevor M.]
J. Chem. Thermodyn. 2008, 40, 4, 580-591
ABSTRACT
Densities of pure 1-ethyl-3-methylimidazolium ethylsulfate ionic liquid [C2mim][EtSO4] and its mixtures with methanol have been measured with an accuracy of +-0.2 kg * m-3, over the temperature range (283.15 to 333.15) K and pressure range (0.1 to 35) MPa, using a vibrating tube densimeter. Excess volumes have been calculated directly from the experimental densities. The latter data have been correlated by the Tait equation with the temperature dependent parameters for the pure ionic liquid and by a van Laar-type equation, involving parameters dependent on temperature and pressure for the mixtures. The isobaric expansivity, isothermal compressibility, and related excess properties have been calculated. The exceptionally strong influence of pressure and temperature on these properties has been observed.
Compounds
# Formula Name
1 C8H16N2O4S 1-ethyl-3-methylimidazolium ethyl sulfate
2 CH4O methanol
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
  • Pressure, kPa; Liquid
  • Temperature, K; Liquid
  • Liquid
  • VIBTUB:UFactor:6
  • 63
  • POMD
  • 2
  • 1
  • Mass density, kg/m3 ; Liquid
  • Temperature, K; Liquid
  • Pressure, kPa; Liquid
  • Mole fraction - 1; Liquid
  • Liquid
  • VIBTUB:UFactor:6
  • 693