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

Solubilities of Diglycolic Acid Esters in Supercritical Carbon Dioxide

Xie, Y.[Yaoping], Yang, H.-J.[Hai-Jian], Wang, W.[Wei], Chen, R.[Rong]
J. Chem. Eng. Data 2009, 54, 1, 102-107
ABSTRACT
A series of new CO2-soluble diglycolic acid esters were designed and synthesized, and their structures were confirmed by IR, NMR, and elemental analysis. The solubilities of compounds were measured at temperatures ranging from (313 to 333) K and pressures from (8.5 to 19.3) MPa in supercritical carbon dioxide. All of the newly synthesized esters showed good to high solubility (as high as 1.25 mol % for compound 1) in supercritical CO2 at easily accessible temperatures and pressures. The measured solubility data were correlated using a semiempirical model. Consequently, the calculated results showed satisfactory agreement with the experimental data and differed from the measured values by between (3.18 and 19.58) %.
Compounds
# Formula Name
1 CO2 carbon dioxide
2 C14H26O5 dipentyl 2,2'-oxydiacetate
3 C18H34O5 diheptyl 2,2'-oxydiacetate
4 C22H42O5 dinonyl 2,2'-oxydiacetate
5 C26H50O5 diundecyl 2,2'-oxydiacetate
6 C30H58O5 ditridecyl 2,2'-oxydiacetate
7 C34H66O5 dipentadecyl 2,2'-oxydiacetate
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
  • visual observation
  • 15
  • 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
  • visual observation
  • 15
  • 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
  • visual observation
  • 15
  • 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
  • visual observation
  • 15
  • POMD
  • 1
  • 6
  • Vapor or sublimation pressure, kPa ; Fluid (supercritical or subcritical phases)
  • Temperature, K; Fluid (supercritical or subcritical phases)
  • Mole fraction - 6; Fluid (supercritical or subcritical phases)
  • Fluid (supercritical or subcritical phases)
  • Crystal - 6
  • visual observation
  • 15
  • POMD
  • 1
  • 7
  • Vapor or sublimation pressure, kPa ; Fluid (supercritical or subcritical phases)
  • Temperature, K; Fluid (supercritical or subcritical phases)
  • Mole fraction - 7; Fluid (supercritical or subcritical phases)
  • Fluid (supercritical or subcritical phases)
  • Crystal - 7
  • visual observation
  • 15