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

Solid-Liquid Equilibrium and Phase Diagram for the Ternary p-Nitrobenzoic Acid + m-Nitrobenzoic Acid + Ethanol System

Yao, G.-B.[Gan-Bing]
J. Chem. Eng. Data 2010, 55, 1, 554-557
ABSTRACT
Solubility data for the ternary p-nitrobenzoic acid + m-nitrobenzoic acid + ethanol system were measured at 273.1 K, 283.1 K, and 313.1 K, respectively. Three isothermal phase diagrams of the system were constructed on the basis of the measured solubilitities. Two solid phases, m-nitrobenzoic acid and p-nitrobenzoic acid, were formed and confirmed by Schreinemaker s wet residue method. The crystallization regions of m-nitrobenzoic acid and p-nitrobenzoic acid increase as the temperature decreases. At different temperature, the crystallization region of p-nitrobenzoic acid is larger than that of m-nitrobenzoic acid.
Compounds
# Formula Name
1 C7H5NO4 4-nitrobenzoic acid
2 C7H5NO4 3-nitrobenzoic acid
3 C2H6O ethanol
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
  • 3
  • 2
  • Mass fraction - 3 ; Liquid
  • Temperature, K; Liquid
  • Mass fraction - 2; Liquid
  • Pressure, kPa; Liquid
  • Liquid
  • Crystal - 1
  • Chromatography
  • 35
  • POMD
  • 1
  • 3
  • 2
  • Mass fraction - 3 ; Liquid
  • Temperature, K; Liquid
  • Mass fraction - 2; Liquid
  • Pressure, kPa; Liquid
  • Liquid
  • Crystal - 2
  • Chromatography
  • 13