FOX-7

FOX-7

Names
IUPAC name 2,2-Dinitroethene-1,1-diamine
Other names FOX-7 FOX7
Identifiers
CAS Number	145250-81-3 Y
Jmol 3D model	Interactive image
SMILES N/C(N)=C([N+]([O-])=O)\[N+]([O-])=O
Properties
Chemical formula	C2H4N4O4
Molar mass	148.08
Density	1.885 g cm−3
Melting point	238 °C (460 °F; 511 K) (decomposes)
Vapor pressure	{{{value}}}
Explosive data
Detonation velocity	8870 m/s at density 1.885 g cm−3 (estimated) 8335 m/s at density 1.756 g cm−3 (measured, small-scale testing)
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
Y verify (what is YN ?)
Infobox references

FOX-7 or 1,1-diamino-2,2-dinitroethene (DADNE) is an insensitive high explosive compound. It was first synthesized in 1998 by the FOA Defence Research Establishment (Sweden).

FOX-7 is similar to the insensitive chemical compound TATB, which is a benzene ring compound with three amino and three nitro groups. FOX-7 has a two-carbon backbone rather than a benzene ring, but the amino and nitro groups have similar effects in both cases according to published reports on sensitivity and chemical decay processes of FOX-7. FOX-7 is today produced by Eureco Bofors AB in Sweden.

Its explosive properties appear extremely favorable; in addition to its insensitive properties, the detonation velocity of mixtures of 80% FOX-7 plus binders are as high as Composition B, and nearly pure FOX-7 based plastic bonded explosives are slightly superior to RDX. FOX-7 has been calculated to have a detonation velocity of 8,870 m/s.

Due to its small-scale production, the cost of FOX-7 is relatively high. However, the production is based on commercial starting material and the synthesis is uncomplicated. The price is therefore predicted to fall as production scale increases. There is no current full scale use of FOX-7, but it is being tested at several military research centers. The need for less sensitive munitions is the most important driver for testing FOX-7.

Further reading

• US Patent 6340780 - Method of preparing salts of dinitromethane
• Computational Studies of FOX-7, a New Insensitive Explosive, Dorsett, 2000, accessed Aug 25, 2005
• DETONATION AND SENSITIVITY PROPERTIES OF FOX-7 AND FORMULATIONS CONTAINING FOX-7, Karlsson et al., 2002, accessed Aug 25, 2005
• US Patent 6312538 - Chemical compound suitable for use as an explosive, intermediate and method for preparing the compound<