cis-1,4-Dinitroglycoluril (1,4-dinitrotetrahydroimidazo[4,5-d]imidazole-2,5-(1H,3H)-dione, C4H4N6O6, known as DINGU in the literature) is an important
explosive regarded as one of the potential ingredients for low vulnerability ammunition applications. the rate of detonation is as high as 8300 m/s.
tetranitroglycoluril, is described having a stability under vacuum of 6 cm3 /g/100 hours at 110° C. The compound exhibits a rate of detonation at
least equal to 9,073 meters per second [at a] density... of 1.94 [g/cm3], has a decomposition temperature of about 200° C. and is stable at a
temperature of up to 100° C. at normal pressure. It may be dried at 65° C. The rate of detonation and brisance value are superior to octogen. [It
is] soluble in dioxane to the extent of 17 g in 100 cc at 27° C. and in acetic acid to the extent of 15.7 in 100 cc at the temperature of 25° C.
[The] preparation of tetranitroglycoluril... consists of nitrating [either] glycoluril [or] dinitroglycoluril with a mixture of nitric acid and
dinitrogen pentoxide at a temperature between -5° C. and 50° C., [then] allowing the product to precipitate and filtering the product from the
reaction mixture. density 1.94 g/cm3
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