The solubility of coumarin in six pure solvents was experimentally determined at temperature ranging from 278.15 K to 318.15 K by using a static analytical method under atmospheric pressure. The results showed that the solubility of coumarin in all tested solvents increases with the increasing temperature. Four thermodynamic models were used to correlate the experimental solubility data and the calculation results showed that all models can give satisfactory correlation results. The melting temperature and the enthalpy of fusion of coumarin were also measured by differential scanning calorimetry (DSC). In addition, the mixing thermodynamic properties of coumarin were also estimated by using the Wilson model and the experimental solubility data.
Compounds
#
Formula
Name
1
CH4O
methanol
2
C2H6O
ethanol
3
C3H8O
propan-1-ol
4
C3H8O
propan-2-ol
5
C6H14
hexane
6
C6H12
cyclohexane
7
C9H6O2
1,2-benzopyrone
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
7
Normal melting temperature, K ; Crystal
Crystal
Liquid
Air at 1 atmosphere
DTA
1
POMD
7
Molar enthalpy of transition or fusion, kJ/mol ; Crystal