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

Measurement and Correlation for the Solid Solubility of Antioxidants Sodium l-Ascorbate and Sodium Erythorbate Monohydrate in Supercritical Carbon Dioxide

Wang, T.-C.[Tzu-Chi], Chang, P.-C.[Po-Chao]
J. Chem. Eng. Data 2015, 60, 3, 790-794
ABSTRACT
In this research, the solubility of sodium l-ascorbate and that of sodium erythorbate monohydrate, both being antioxidants, in supercritical carbon dioxide are measured. Using semiflow type equipment, this experiment gathers the data of solubility for antioxidnats at (308.15, 313.15, and 318.15) K, over a range of pressures from (12 to 24) MPa. The data gleaned from the experiment are forward numerically processed, with the use of the semiempirical equations presented by Chrastil and by Mendez-Santiago and Teja, to make clear the correlation among various characteristics. The final results are satisfactory: when parameters with optimal fitting are picked to examine the correlation, the average absolute relative deviation (AARD) is under 4 %.
Compounds
# Formula Name
1 CO2 carbon dioxide
2 C6H7NaO6 sodium L-ascorbate
3 C6H9NaO7 sodium (R)-2-((R)-1,2-dihydroxyethyl)-4-hydroxy-5-oxo-2,5-dihydrofuran-3-olate monohydrate
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 - 2 ; 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 - 2
  • UV-VIS
  • 21
  • POMD
  • 1
  • 3
  • Mole fraction - 3 ; 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 - 3
  • UV-VIS
  • 21