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

Solubility and Mass Transfer Coefficient Enhancement of Benzyl Acetate in Water through Hydrotropy

Meyyappan, N., Nagendra Gandhi, N.
J. Chem. Eng. Data 2004, 49, 5, 1290-1294
ABSTRACT
A comprehensive investigation of the solubility and mass transfer coefficient enhancement of benzyl acetate through hydrotropy has been undertaken. The solubility studies have been carried out with hydrotropes such as citric acid, urea, sodium benzoate, and sodium salicylate for a wide concentration range from 0 to 3.0 mol/L-1 along with system temperature from T = 303 to 333 K. The effectiveness of hydrotropes was measured by the determination of Setschenow constant "Ks". The solubility of benzyl acetate increases with increasing hydrotrope concentration and also with system temperature. A minimum hydrotrope concentration (MHC) in the aqueous phase was required to initiate significant solubilization of benzyl acetate. Consequent to the increase in solubilization of benzyl acetate, the mass transfer coefficient was also found to increase with increasing hydrotrope concentration. A threshold value of MHC is to be maintained to have an appreciable enhancement in the mass transfer coefficient. The maximum enhancement factor, which is the ratio of the value in the presence and absence of a hydrotrope, has been determined for all sets of experiments.
Compounds
# Formula Name
1 C9H10O2 benzyl ethanoate
2 H2O water
3 C6H8O7 citric acid
4 C7H5NaO2 sodium benzoate
5 C7H5NaO3 sodium salicylate
6 CH4N2O urea
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
  • 2
  • Amount concentration (molarity), mol/dm3 - 1 ; Liquid mixture 1
  • Temperature, K; Liquid mixture 1
  • Solvent: Amount concentration (molarity), mol/dm3 - 3; Liquid mixture 1
  • Pressure, kPa; Liquid mixture 1
  • Liquid mixture 1
  • Liquid mixture 2
  • OTHER
  • 80
  • POMD
  • 1
  • 4
  • 2
  • Amount concentration (molarity), mol/dm3 - 1 ; Liquid mixture 1
  • Temperature, K; Liquid mixture 1
  • Solvent: Amount concentration (molarity), mol/dm3 - 4; Liquid mixture 1
  • Pressure, kPa; Liquid mixture 1
  • Liquid mixture 1
  • Liquid mixture 2
  • OTHER
  • 80
  • POMD
  • 5
  • 1
  • 2
  • Amount concentration (molarity), mol/dm3 - 1 ; Liquid mixture 1
  • Temperature, K; Liquid mixture 1
  • Solvent: Amount concentration (molarity), mol/dm3 - 5; Liquid mixture 1
  • Pressure, kPa; Liquid mixture 1
  • Liquid mixture 1
  • Liquid mixture 2
  • OTHER
  • 80
  • POMD
  • 6
  • 1
  • 2
  • Amount concentration (molarity), mol/dm3 - 1 ; Liquid mixture 1
  • Temperature, K; Liquid mixture 1
  • Solvent: Amount concentration (molarity), mol/dm3 - 6; Liquid mixture 1
  • Pressure, kPa; Liquid mixture 1
  • Liquid mixture 1
  • Liquid mixture 2
  • OTHER
  • 80