Developing a global approach for determining the molar heat capacity of deep eutectic solvents

•Thermodynamic knowledge is included in thermal characterizing deep eutectic solvent.•A universal model is developed for estimating molar Cp of deep eutectic solvents.•The model predicts 503 experimental data from eight references with the AARD = 0.27%•The LSSVR accuracy is much better than the existing correlations in the literature.•Temperature linearly increase the molar heat capacity of all deep eutectic solvents.