R. Meyer J. Köhler A. Homburg Explosives

173 Hexanitrooxanilide
energy of formation: +240.3 kcal/kg = +1005.3 kJ/kg
enthalpy of formation: +220.0 kcal/kg = +920.5 kJ/kg
oxygen balance: –10.95%
nitrogen content: 38.3%
heat of explosion
(H2O liq.): 1509 kcal/kg = 6314 kJ/kg
(H2O gas): 1454 kcal/kg = 6084 kJ/kg
specific energy: 134.9 mt/kg = 1323 kJ/kg
density: 2.04 g/cm3 melting point.: > 195 °C (decomposition)
impact sensitivity: 0.4 kp m = 4 Nm
friction sensibility: 4.9 kp = 48 N
Hexanitrohexaazaisowurtzitane is obtained by condensing glyoxal with
benzylamine to yield hexabenzylhexaazaisowurtzitane. Next the benzyl
groups are replaced under reducing conditions by easily removable
substituents such as acetyl or silyl groups. Nitration to form hexanitrohexaazaisowurtzitane
takes place in the final reaction step. Hexanitrohexaazaisowurtzitane
exists in various crystal modifications, only
the e-modification is being of interest because of its high density and
detonation velocity of more than 9000 m/s.
Being one of the most energy-rich organic explosives, CL 20 is attractive
for many energetic systems.
Hexanitrooxanilide
Hexanitrodiphenyloxamid; HNO
empirical formula: C14H6N8O14
molecular weight: 510.1
oxygen balance: –53.3%
nitrogen content: 21.97%
melting point: 295–300 °C = 565–570 °F
decomposition temperature: 304 °C = 579 °F
This compound is prepared by nitration of oxanilide. It is of interest as
being relatively stable at high temperatures. The decomposition reaction
above 304 °C is endothermic.