Aerothermochemical studies of energetic liquid materials: 3. Approximate determination of some thermophysical and thermochemical properties of organic azides

Through either direct measurement or group additivity calculation, the densities, normal boiling points, latent heats of vaporization, limits of superheat, enthalpies of formation, combustion and decomposition, and adiabatic flame temperatures have been approximately determined for the mono- and di-substituted alkyl azides, which exhibit significantly enhanced droplet gasification rates and microexplosion events. Similar determinations have also been performed for some alkyl halides, especially alkyl bromides; the similarity of their properties with those of the organic azides are noted. Implications of the thermophysical and thermochemical properties determined herein on the potential of the organic azides and halides as jet fuels and/or jet fuel additives are discussed.