Thermochemical Properties of Dissolution of Nitroguanidine in Dimethyl Sulfoxide and N,N-Dimethylformamide

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Abatract. The enthalpies of dissolution for nitroguanidine (NQ) in dimethyl sulfoxide (DMSO) and N,N-dimethylformamide (DMF) were measured using a RD496-2000 Calvet microcalorimeter at 298.15 K. Empirical formula for the calculation of the enthalpies of dissolution (ΔdissH) was obtained from the experimental data of the dissolution processes of NQ in DMSO and DMF. The corresponding kinetic equations describing the dissolution processes were dα/dt=10-1.49(1-α)0.94 for the dissolution of NQ in DMSO and dα/dt=10-1.59(1-α)0.90 for the dissolution of NQ in DMF.

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417-423

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September 2013

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© 2013 Trans Tech Publications Ltd. All Rights Reserved

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