Thermodynamics Research Center / ThermoML | Journal of Chemical Thermodynamics

Solubility behaviour and thermodynamic analysis of methyleneaminoacetonitrile in binary (ethanol + water, ethanol + 2-propanol, ethanol + n-butanol) solvents

Wang, Long, Sun, Jingping, Hua, Yuwei, Xu, Li, Liu, Guoji
J. Chem. Thermodyn. 2019, 138, 272-281
ABSTRACT
The solubility of methyleneaminoacetonitrile in binary (ethanol + water, ethanol + 2-propanol, ethanol + n-butanol) solvents was measured by a laser dynamic method under p = 101.1 kPa at temperatures ranging from 278.15 K to 323.15 K. The solubility increased with increasing temperature at a given solvent composition; the solubility also increased with the increasing content of ethanol at a given temperature. The modified Apelblat equation, lambdah equation and Jouyban-Acree model were used to correlate the experimental solubility data, the values of RD and RMSD indicated that these models fit solubility data well. The calculated thermodynamic properties of deltasolH.deg., deltasolS.deg., deltasolG.deg. showed that the dissolution process in binary solvents was endothermic and entropy-driven.
Compounds
# Formula Name
1 C3H4N2 methyleneaminoacetonitrile
2 C2H6O ethanol
3 C3H8O propan-2-ol
4 C4H10O butan-1-ol
5 H2O water
6 ClNa sodium chloride
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
  • Triple point temperature, K ; Crystal
  • Crystal
  • Liquid
  • Air at 1 atmosphere
  • DSC
  • 1
  • POMD
  • 1
  • Molar enthalpy of transition or fusion, kJ/mol ; Crystal
  • Crystal
  • Liquid
  • Air at 1 atmosphere
  • DSC
  • 1
  • POMD
  • 1
  • 2
  • 5
  • Mole fraction - 1 ; Liquid
  • Solvent: Mass fraction - 2; Liquid
  • Temperature, K; Liquid
  • Pressure, kPa; Liquid
  • Liquid
  • Crystal - 1
  • Titration method
  • 40
  • POMD
  • 1
  • 2
  • 3
  • Mole fraction - 1 ; Liquid
  • Solvent: Mass fraction - 2; Liquid
  • Temperature, K; Liquid
  • Pressure, kPa; Liquid
  • Liquid
  • Crystal - 1
  • Titration method
  • 40
  • POMD
  • 1
  • 2
  • 4
  • Mole fraction - 1 ; Liquid
  • Solvent: Mass fraction - 2; Liquid
  • Temperature, K; Liquid
  • Pressure, kPa; Liquid
  • Liquid
  • Crystal - 1
  • Titration method
  • 40
  • POMD
  • 6
  • 5
  • Mass fraction - 6 ; Liquid
  • Temperature, K; Liquid
  • Pressure, kPa; Liquid
  • Liquid
  • Crystal - 6
  • Titration method
  • 9