HMX

HMX
Names
	Preferred IUPAC name 1,3,5,7-Tetranitro-1,3,5,7-tetrazocane
	Other names Octahydro-1,3,5,7-tetranitro-1,3,5,7-tetrazocine
Identifiers
CAS Number	2691-41-0 ;
3D model (JSmol)	Interactive image;
ChEBI	CHEBI:33176 ;
ChemSpider	16636 ;
ECHA InfoCard	100.018.418
PubChem CID	17596;
UNII	LLW94W5BSJ ;
CompTox Dashboard (EPA)	DTXSID3024237 ;
	InChI InChI=1S/C4H8N8O8/c13-9(14)5-1-6(10(15)16)3-8(12(19)20)4-7(2-5)11(17)18/h1-4H2 Key: UZGLIIJVICEWHF-UHFFFAOYSA-N ; InChI=1/C4H8N8O8/c13-9(14)5-1-6(10(15)16)3-8(12(19)20)4-7(2-5)11(17)18/h1-4H2 Key: UZGLIIJVICEWHF-UHFFFAOYAL;
	SMILES C1N(CN(CN(CN1[N+](=O)[O-])[N+](=O)[O-])[N+](=O)[O-])[N+](=O)[O-];
Properties
Chemical formula	C4H8N8O8
Molar mass	296.155 g/mol
Density	1.91 g/cm3, solid
Melting point	276 to 286 °C (529 to 547 °F; 549 to 559 K)
Explosive data
Shock sensitivity	Low
Friction sensitivity	Low
Detonation velocity	9100 m/s
RE factor	1.70
Hazards
	Occupational safety and health (OHS/OSH):
Main hazards	Explosive
	GHS labelling:
Pictograms
Signal word	Danger
Hazard statements	H201, H205, H241, H301, H304, H311, H319
Precautionary statements	P210, P250, P280, P370+P380, P372, P373
NFPA 704 (fire diamond)	3 1 3
	Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). verify (what is ?) Infobox references

HMX, also called octogen, is a powerful and relatively insensitive nitroamine high explosive chemically related to RDX. The compound's name is the subject of much speculation, having been variously listed as High Melting Explosive, High-velocity Military Explosive, or High-Molecular-weight RDX.

The molecular structure of HMX consists of an eight-membered ring of alternating carbon and nitrogen atoms, with a nitro group attached to each nitrogen atom. Because of its high mass-specific enthalpy of formation, it is one of the most potent chemical explosives manufactured, although a number of newer ones, including HNIW and ONC, are more powerful.