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

Trans-Cinnamic Acid Solubility Enhancement in the Presence of Ethanol As a Supercritical CO2 Cosolvent

Chafer, A.[Amparo], Fornari, T.[Tiziana], Stateva, R. P.[Roumiana P.], Berna, A.[Angel]
J. Chem. Eng. Data 2009, 54, 8, 2263-2268
ABSTRACT
Trans-3-phenyl-2-propenoic acid (cinnamic acid; trans-cinnamic acid) is widely used in food, cosmetics, and pharmaceuticals because of its reported antimicrobial, antifungal, and antioxidant properties. This paper is devoted to the experimental measurement of the solubility of solid trans-cinnamic acid in pure supercritical CO2 and in supercritical CO2 with ethanol as a cosolvent. Measurements were carried out at T ) (313.15 to 343.15) K and at p ) (10 to 40) MPa. Two different thermodynamic models were applied to represent the solubility data obtained: a cubic type equation of state, the Soave-Redlich-Kwong (SRK-EoS) was employed to correlate the solubility data and the group contribution associating EoS (GCA-EoS) was also applied but in a completely predictive manner. In addition, values for the thermophysical properties of trans-cinnamic acid are also advocated.
Compounds
# Formula Name
1 C9H8O2 (E)-cinnamic acid
2 C2H6O ethanol
3 CO2 carbon dioxide
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
  • 3
  • 1
  • Mole fraction - 1 ; Fluid (supercritical or subcritical phases)
  • Pressure, kPa; Fluid (supercritical or subcritical phases)
  • Temperature, K; Fluid (supercritical or subcritical phases)
  • Fluid (supercritical or subcritical phases)
  • Crystal - 1
  • UV-Spectrometry
  • 10
  • POMD
  • 2
  • 3
  • 1
  • Mole fraction - 1 ; Fluid (supercritical or subcritical phases)
  • Pressure, kPa; Fluid (supercritical or subcritical phases)
  • Temperature, K; Fluid (supercritical or subcritical phases)
  • Solvent: Mass fraction - 2; Fluid (supercritical or subcritical phases)
  • Fluid (supercritical or subcritical phases)
  • Crystal - 1
  • UV-Spectrometry
  • 24