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

Solubility of Several Short-Chain Lithium Dialkyldithiocarbamates in Liquid and Supercritical Carbon Dioxide

Weinstein, R. D.[Randy D.], Grotzinger, L. L.[Laurel L.], Salemo, P.[Patrick], Omiatek, D. M.[Donna M.], Bessel, C. A.[Carol A.]
J. Chem. Eng. Data 2005, 50, 6, 2088-2093
ABSTRACT
The solubility of lithium diethyldithiocarbamate, lithium dipropyldithiocarbamate, lithium dibutyldithiocarbamate, and lithium bis(trifluoroethyl)dithiocarbamate was measured in liquid and supercritical carbon dioxide at (298, 308, and 318) K and at pressures between (80 and 250) bar. The solubilites were measured experimentally through traditional cloud point observations using a variable-volume stirred vessel with a sapphire window for visual inspection of the contents. These four short-chain lithium dialkyldithiocarbamates showed an increase in solubility with increasing density (or pressure) at fixed temperature. This increase was fairly independent of the temperature. Solubilites also increased with increasing temperature. The data were accurately modeled using an equation derived from association laws, which had a strong solvent density and temperature dependence.
Compounds
# Formula Name
1 CO2 carbon dioxide
2 C5H10LiNS2 lithium diethylcarbamodithioate
3 C7H14LiNS2 lithium dipropyldithiocarbamate
4 C9H18LiNS2 lithium dibutyldithiocarbamate
5 C5H4F6LiNS2 lithium bis(trifluoroethyl)dithiocarbamate
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
  • 2
  • Vapor or sublimation pressure, kPa ; Fluid (supercritical or subcritical phases)
  • Temperature, K; Fluid (supercritical or subcritical phases)
  • Mole fraction - 2; Fluid (supercritical or subcritical phases)
  • Fluid (supercritical or subcritical phases)
  • Crystal - 2
  • Closed cell (Static) method
  • 21
  • POMD
  • 1
  • 3
  • Vapor or sublimation pressure, kPa ; Fluid (supercritical or subcritical phases)
  • Temperature, K; Fluid (supercritical or subcritical phases)
  • Mole fraction - 3; Fluid (supercritical or subcritical phases)
  • Fluid (supercritical or subcritical phases)
  • Crystal - 3
  • Closed cell (Static) method
  • 22
  • POMD
  • 1
  • 4
  • Vapor or sublimation pressure, kPa ; Fluid (supercritical or subcritical phases)
  • Temperature, K; Fluid (supercritical or subcritical phases)
  • Mole fraction - 4; Fluid (supercritical or subcritical phases)
  • Fluid (supercritical or subcritical phases)
  • Crystal - 4
  • Closed cell (Static) method
  • 26
  • POMD
  • 1
  • 5
  • Vapor or sublimation pressure, kPa ; Fluid (supercritical or subcritical phases)
  • Temperature, K; Fluid (supercritical or subcritical phases)
  • Mole fraction - 5; Fluid (supercritical or subcritical phases)
  • Fluid (supercritical or subcritical phases)
  • Crystal - 5
  • Closed cell (Static) method
  • 23