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

Solubility of p-Toluenesulfonamide in Pure and Modified Supercritical Carbon Dioxide

Li, J.-l.[Jia-lin], Jin, J.-s.[Jun-su], Zhang, Z.-t.[Ze-ting], Pei, X.-m.[Xue-mei]
J. Chem. Eng. Data 2009, 54, 3, 1142-1146
ABSTRACT
The experimental equilibrium solubilities of p-toluenesulfonamide (p-TSA) in supercritical carbon dioxide were measured at temperatures between (308.15 and 328.15) K and for pressures from (8.0 to 21.0) MPa using a dynamic flow method. The solubility ranged from a p-TSA mole fraction of 0.97 * 10-5 (308.15 K, 8.0 MPa) to 5.12 * 10-5 (328.15 K, 21.0 MPa). The effects of two cosolvents, ethanol and glycol, were investigated at a cosolvent mole concentration of 3.5 %. The results showed that the solubility was greatly enhanced by the presence of both the cosolvents, and ethanol exhibited a higher cosolvent effect. The Peng-Robinson EOS with van der Waals (VDW2) mixing rules was employed to calculate the density of the supercritical carbon dioxide (SC CO2) + ethanol mixture. The solubility data in the absence and presence of cosolvents were correlated by the Chrastil equation and the modified Mendez-Santiago and Teja equation, respectively. Both the correlations yielded satisfactory results, with average absolute relative deviation (AARD) values less than 6 %.
Compounds
# Formula Name
1 C7H9NO2S p-toluenesulfonamide
2 CO2 carbon dioxide
3 C2H6O ethanol
4 C2H6O2 1,2-ethanediol
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
  • Mole fraction - 1 ; Fluid (supercritical or subcritical phases)
  • Temperature, K; Fluid (supercritical or subcritical phases)
  • Pressure, kPa; Fluid (supercritical or subcritical phases)
  • Fluid (supercritical or subcritical phases)
  • Crystal - 1
  • Spectrophotometry
  • 15
  • POMD
  • 3
  • 1
  • 2
  • Mole fraction - 1 ; Fluid (supercritical or subcritical phases)
  • Temperature, K; Fluid (supercritical or subcritical phases)
  • Pressure, kPa; Fluid (supercritical or subcritical phases)
  • Solvent: Mole fraction - 3; Fluid (supercritical or subcritical phases)
  • Fluid (supercritical or subcritical phases)
  • Crystal - 1
  • Spectrophotometry
  • 15
  • POMD
  • 1
  • 4
  • 2
  • Mole fraction - 1 ; Fluid (supercritical or subcritical phases)
  • Pressure, kPa; Fluid (supercritical or subcritical phases)
  • Temperature, K; Fluid (supercritical or subcritical phases)
  • Solvent: Mole fraction - 4; Fluid (supercritical or subcritical phases)
  • Fluid (supercritical or subcritical phases)
  • Crystal - 1
  • Spectrophotometry
  • 5