Thermochemical properties of di( N , N -di(2,4,6-trinitrophenyl)amino)-ethylenediamine in dimethyl sulfoxide and N -methyl pyrrolidone

The enthalpies of dissolution for di( N , N -di(2,4,6,-trinitrophenyl)amino)-ethylenediamine (DTAED) in dimethyl sulfoxide (DMSO) and N -methyl pyrrolidone (NMP) were measured using a RD496-2000 Calvet microcalorimeter at 298.15 K. Empirical formulae for the calculation of the enthalpies of dissolution (Δ diss H ) were obtained from the experimental data of the dissolution processes of DTAED in DMSO and NMP. The linear relationships between the rate ( k ) and the amount of substance ( a ) were found. The corresponding kinetic equations describing the two dissolution processes were dα/ . -dt = 10^ - 2.68( 1 - α)^0.84 for the dissolution of DTAED in DMSO, and dα/ . -dt = 10^ - 2.79( 1 - α)^0.87 for the dissolution of DTAED in NMP, respectively.