Thermochemical properties of dihydrazidinium bis(tetrazolyl)amine in water and N-methyl pyrrolidone
2015
The enthalpies of dissolution of dihydrazidinium bis(tetrazolyl)amine (DHBTA) in water and N-methyl pyrrolidone (NMP) were measured using a RD496-2000 Calvet microcalorimeter at 298.15 K under atmospheric pressure, respectively. Empirical formulae for the calculation of the enthalpy of dissolution (Δdiss H), relative partial molar enthalpy (Δdiss H partial) and relative apparent molar enthalpy (Δdiss H apparent) were obtained from the experimental data of the dissolution processes of DHBTA in water and NMP. Furthermore, the corresponding kinetic equations describing the two dissolution processes were dα/dt = 10−2.70(1 − α)0.82 for the dissolution of DHBTA in water, and dα/dt = 10−2.47(1 − α)0.66 for the dissolution of DHBTA in NMP, respectively.
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