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A thermally stable, insensitive, high-explosive 1,3,5-triamino-2,4,6-trinitrobenzene (TATB) is manufactured by amination of 1,3,5-trichloro-2,4,6-trinitrobenzene in toluene with NH3 gas. An orange–red, sensitive impurity, 1,3,5-triamino-2-chloro-4,6-dinitrobenzene (TACDNB), was found forming with product TATB in the pilot-plant process. This impurity was isolated and characterized by single-crystal XRD, NMR, FTIR, DSC, and sensitivity test. The chemical reactivity of this impurity with aqueous sodium hydroxide solution was also studied. The process anomalies which led to the formation of this impurity with product TATB were investigated. This TACDNB impurity was formed due to amination of 1,3,5,6-tetrachloro-2,4-dinitrobenzene (T4) when excess NH3 gas was fed into the reactor.

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A bottom up approach for the preparation of Nano Aluminium Powder (NAP) using a Transferred Arc Thermal Plasma Reactor (TAPR) is described. The aluminium block is subjected to evaporation by the application of a thermal plasma. The aluminium vapour produced is rapidly quenched to room temperature resulting in crystallization of the aluminium vapour in nano-particulate form. Various process parameters, such as the plasma torch power, reactor pressure and plasma gas composition were optimized. This paper also describes the characterization of NAP by analytical methods, for the estimation of the Active Aluminium Content (AAC), Total Aluminium Content (TAC), XRD, bulk density, BET surface area, HR-TEM etc. The results are compared with those for samples prepared in other thermal plasma reactors, such as the DC Arc Plasma Reactor (DCAPR) and the RF Induction Thermal Plasma Reactor (RFITPR), and for commercially available NAP samples (ALEX, prepared by the EEW technique).

Surface energy is an important parameter to predict the morphology of ammonium perchlorate (AP) crystals in the presence and absence of ethylene glycol as a linear correlation is found between the interaction energies and the surface energies.

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Nano iron oxide (a-FeZ03) exhibits better scale, and consume less energy. Since the large volumes of performance as a burn rate catalyst in composite rocket gases are evolved during combustion of citrate polymer gel it propellant. A polymer citrate precursor method (a combustion limits particle contact and hence, coarsening and process) was developed (in this laboratory) for large scale agglomeration of particles. Moreover, this process produces synthesis of nanoa-FeZ03 from starting material iron nitrate. The high purity powder which is free from chlorine or any other synthesized nanoa-FeZ03 wascharacterized for bulk density, powder XRD, BET surface area and HRTEM. Two redox impurities. The current paper describes the synthesis of nano titration methods viz. permanganate and iodometricwere iron oxide (a-Fe20 3 )in large scale for application in propellant discussed for chemical analysis (assay) of samples. Preliminary formulations. study indicates that use of nanoFez03in composite propellantThe synthesized a-Fe20 3 was characterized for bulk density, formulations resulted in � 50% improvement in burn rate. powder XRD, BET surface area and HRTEM. Two redox Keywordsnano iron oxide, large scale synthesis, titration methods, viz., permanganate and iodometric method permanganate, iodometric, titration, purity estimation,were studied for assay of nano a-Fe20 3 samples. The propellant, burn rate.application potential of synthesized nano-a-Fe20 3 has been