TNGU by nitration of glycouryl. TNGU -
colorless or slightly yellowish
crystaline compound, insoluble in water and is slowly hydrolized by it
to tetranitraminoethane, fast decomposed in alkaline solution.
hot ethanol. Very powerfull, and dense explosive, easily pressed,
density is 2.02 g/cm3 (from nitromethane), density of technical grade
1.98 g/cm3. Slightly more sensitive then PETN, soluble in nitromethane.
Decomposition starts slightly above 100C, flash point 200C. Detonation
velocity is 9150 m/sec at 1.95 g/cm3. Brisance by sand test is 61.9g of
crushed sand (TNT - 48g, PETN - 62.7g). Practitial use is not
because of unsufficent hydrolitic stability, partialy decomposed on
melt with TNT. Can be used in flegmatized state or with thermoplastic
Production of glycouryl. 5.84g of glyoxal (0.1 mol, 12.3 ml 40%, density 1.19 g/cm3) is mixed with 15g of powdered urea, solution is mixed until urea is completely dissolved and then acidified by sulphuric acid to pH~0 and placed on water bath under reflux condenser. Rection mixture is heated on water bath for 1 hour, cooled and filtered to get glycouryl. Crude product is mixed with 100 ml of boiling water, well stirred and mixture is left to cool to room temperature. Pure glycouryl is filtered and dried at room temperature. Yield is 9.9g (71%).