Measurement and correlation of solubility of ε-CL-20 in solvent mixtures of (chloroform + ethyl acetate) and (m-xylene + ethyl acetate) at temperatures from 278.15 K to 313.15 K

The solubility of ε-CL-20 in (chloroform + ethyl acetate) and (m-xylene + ethyl acetate) solvent mixtures was measured at atmospheric pressure (0.1 MPa) for the temperature range from 278.15 K to 313.15 K using a gravimetric method. The results indicate that the molar solubility of ε-CL-20 in the two binary solvents shows a negative correlation with temperature when the mole fraction of chloroform or m-xylene is low, but a positive correlation when the mole fraction is high. The solubility data were fitted using the Apelblat equation, CNIBS/R-K, Van't Hoff–Jouyban–Acree, and Jouyban–Acree models. Mixing thermodynamic properties of ε-CL-20 in the binary solvents were also calculated. The reported solubility and dissolution properties of ε-CL-20 in these two binary solvent mixtures can provide essential support for industrial design of ε-CL-20 systems and further theoretical studies.