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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.

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