Dissolution properties of hexanitrohexaazaisowurtzitane (CL-20) in ethyl acetate and acetone

摘要

The enthalpies of dissolution in ethyl acetate and acetone of hexanitrohexaazaisowurtzitane (CL-20) were measured by means of a RD496-2000 Calvet microcalorimeter at 298.15 K, respectively. Empirical formulae for the calculation of the enthalpy of dissolution (Delta dissII), relative partial molar enthalpy (Delta dissIIpartial), relative apparent molar enthalpy (Delta dissIIapparent), and the enthalpy of dilution (Delta H-dil(1,2)) of each process were obtained from the experimental data of the enthalpy of dissolution of CL-20. The corresponding kinetic equations describing the two dissolution processes were d alpha/dt = 1.60 x 10(-2) (1 - alpha)(0.84) for dissolution process of CL-20 in ethyl acetate, and d alpha/dt = 2.15 x 10(-2) (1 - alpha)(0.89) for dissolution process of CL-20 in acetone.