Synthesis and properties of dinitrourea and its salts (NH 4 , hexamethyleneamine, K) which have not been yet reported in literature, are described. DNU can be synthesized by nitration of urea with a high yield (b90%). Spontaneous decomposition of DNU and its salts below their melting points was noted during thermal analysis (DTA-TG). Low stability of DNU excludes the possibility of using it as an energetic material. Preliminary studies have shown that DNU can be used as a precursor in the synthesis of stable nitroamines.
Eine Studie u È ber die Kondensation von Nitramid (NH 2 NO 2 ) mit Formaldehyd und Charakterisierung der entstehenden Produkte Versuche zur Synthese von aliphatischen Polymethylennitroaminen durch die Reaktion zwischen NH 2 NO 2 und Formaldehyd wurden unternommen. Der Syntheseprozeû wurde ausgefu Èhrt in einem Zweikomponentensystem WasseraEthylacetat. Die Lo Èslichkeit des erhaltenen Produkts und seine Zersetzungsemp®ndlichkeit in verschiedenen Lo Èsungsmitteln wurde untersucht. Die Wa Èrmefestigkeit und die Temperatur der Selbstzersetzung wurde bestimmt mittels DTA-TG. Trotz ihrer Eigenschaft als energetisches Material zeigt die Verbindung geringe Emp®ndlichkeit gegen machanische Ein¯u Èsse (Reibung). E  tude de la condensation du nitramide (NH 2 NO 2 ) avec le formalde Âhyde et caracte Ârisation des produits forme Âs On a entrepris des essais de synthe Áse de polyme Âthyle Ánenitroamines aliphatiques par re Âaction entre NH 2 NO 2 et du formalde Âhyde. Le processus de synthe Áse s'est de Âroule  dans un syste Áme a Á deux composants eauaester ace Âtique. On a e Âtudie  la solubilite  du produit obtenu et sa sensibilite  de de Âcomposition dans diffe Ârents solvants. La re Âsistance a Á la chaleur et la tempe Ârature de de Âcomposition spontane Âe ont e Âte  de Âtermine Âes par DTA-TG. Malgre  ses proprie Âte Âs de mate Âriau e Ânerge Âtique, le compose  n'est que tre Ás peu sensible aux in¯uences me Âcaniques (frottement).
SummaryAttempts have been made to synthesize aliphatic polymethylene nitroamines through reactions between NH 2 NO 2 and CH 2 O. The process of synthesis has been achieved in a two-component system: wateraethyl acetate. The solubility of the obtained product, as well as, its susceptibility to chemical decomposition in different solvents have been studied The product's heat resistance and its temperature of selfdecomposition have been determined through the DTA-TG method Despite being an energetic material, it shows little sensitiveness to mechanical stimuli (friction).
The compounds CCI4 + Al + ZnO were suitably prepared, so that its ability to detonate could be investigated. The detonation velocity (D) dependence on the charge density (ρ) has been established. The increase of density above 1.8 kg/dm3 particle velocity was measured. Extraordinarily low parameters of detonation are explained by the special peculiarity of the explosion products.
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