Solubilities of crotonic acid in different organic solvents at several temperatures from (278.15 to 333.15) K

• The solubilities of crotonic acid in eight pure solvents mixture.
• Solubility was determined by the analytical stirred-flask method.
• The experimental solubility data were correlated with the modified Apelblat equation.
• The dissolution process in the selected solvents was endothermic, entropy-driving and non-spontaneous.

In our study the solubilities of crotonic acid in methanol, ethanol, 2-propanol, 1-butanol, acetic acid, N,N-dimethylformamide, ethyl acetate and acetonitrile were experimentally determined over the temperature range of (278.15–333.15) K at around 5 K intervals by employing an analytical stirred-flask method. The experimental solubility data were well correlated with the modified Apelblat equation, in different kinds of solvents the values of the sum of MPD were 6.3. The thermodynamic functions were evaluated by two methods and the results were the same. The dissolving process was endothermic, entropy-driving and non-spontaneous. It was necessary to use the experiment data and correlation models in the reaction and purification of crotonic acid.