Hexanitrohexaazaisowurtzitane

Hexanitrohexaazaisowurtzitane

Names
IUPAC name 2,4,6,8,10,12-Hexanitro-2,4,6,8,10,12-hexaazatetracyclo[5.5.0.03,11.05,9]dodecane
Other names CL-20 Hexanitrohexaazaisowurtzitane 2,4,6,8,10,12-Hexanitro-2,4,6,8,10,12-hexaazaisowurtzitane Octahydro-1,3,4,7,8,10-hexanitro-5,2,6-(iminomethenimino)-1H-imidazo[4,5-b]pyrazine HNIW
Identifiers
CAS Number	135285-90-4 Y
3D model (Jmol)	Interactive image Interactive image
Abbreviations	CL-20, HNIW
ChEBI	CHEBI:77327 N
ChemSpider	8064994 Y 9223599 (3R,9R)-dodec Y 9594121 (3R,5S,9R,11S)- dodec Y
ECHA InfoCard	100.114.169
PubChem CID	9889323 11048432 (3R,9R)-dodec 11419235 (3R,5S,9R,11S)- dodec
InChI InChI=1S/C6H6N12O12/c19-13(20)7-1-2-8(14(21)22)5(7)6-9(15(23)24)3(11(1)17(27)28)4(10(6)16(25)26)12(2)18(29)30/h1-6H Y Key: NDYLCHGXSQOGMS-UHFFFAOYSA-N Y
SMILES o:n(:o)N1C2C3N(C4C(N3n(:o):o)N(C(C1N4n(:o):o)N2n(:o):o)n(:o):o)n(:o):o [O-][N+](=O)N1C2C3N(C4C(N3[N+]([O-])=O)N(C(C1N4[N+]([O-])=O)N2[N+]([O-])=O)[N+]([O-])=O)[N+]([O-])=O
Properties
Chemical formula	C 6N 12H 6O 12
Molar mass	438.1850 g mol−1
Density	2.044 g cm−3
Explosive data
Detonation velocity	9.38 km s−1
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
N  (what is YN ?)
Infobox references

Hexanitrohexaazaisowurtzitane /ˈhɛksɑːˈnaɪtroʊˈhɛksɑːˌæzɑːˌaɪsoʊˈvʊərtsɪteɪn/, also called HNIW and CL-20, is a nitroamine explosive with the formula C₆H₆N₁₂O₁₂. The structure of CL-20 was first proposed in 1979 by Dalian Institute of Chemical Physics. In 1980s, CL-20 was developed by the China Lake facility, primarily to be used in propellants. It has a better oxidizer-to-fuel ratio than conventional HMX or RDX. It releases 20% more energy than traditional HMX-based propellants, and is widely superior to conventional high-energy propellants and explosives.

Industrial production of CL-20 was achieved in China in 2011, and it was soon fielded in propellant of solid rockets. While most development of CL-20 has been fielded by the Thiokol Corporation, the US Navy (through ONR) has also been interested in CL-20 for use in rocket propellants, such as for missiles, as it has lower observability characteristics such as less visible smoke.