Hexanitrodiphenyl ether

It may be prepared by a method described in the patent filed by Westfalisch-Anhaltische Sprengstoffe [10], namely  

The authors state that the substance is less sensitive and more powerful than picric acid. 

This was not confirmed by van Duin and van Lennep [8] who found the sensitivity of hexanitrodiphenyl ether to be higher than that of tetryl. The same authors determined the initiation temperature to be 318°C. Neither is the stability of the product satisfactory, since after 8 hr heating at 95°C the evolution of nitrogen oxides may be observed. 

According to data reported in the literature, sym-hexanitrodiphenyl ether should be considered as an unstable compound and it is to this fact, that the failure to obtain it is usually ascribed. 

Recently Okori and Grabowski [11] have proved that the whole system can be stabilized by the presence of a methyl group on one of the benzene rings, in the meta position to the ether bond. The stable compound VI can be obtained by nitrating m- cresylpicric ether (V) with pure (100%) nitric acid  

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Glycerol-a,a/-hexanitrodiphenyl Ether-/8-nitrate Glycerin-a,a -dipicrylether-/S-nitrate or Nitro-blycerol Dipicrate,... 

Polynitro derivatives of diphensi ether Pen t a ni trod i phenyl ether Hexanitrodiphenyl ether Nitro derivatives of various phenolic ethers Hexanitro diphenyl sulphide Hexanitrodiphenyl sulphone Literature... 

Hexamethylol benzene hexanitrate Hexanitro dihydroxazobenzene Hexanitroazoxy benzene Hexanitrodiphenyl ether Hexanitrodiphenylamine (dry) Hexanitrodiphenylurea Hexanitroethane [918-37-6] Hexanitrooxanilide Hexanitrostilbene Inositol hexanitrate (dry)... 

Several nitro compounds are soluble in chlorine trifluoride, but the solutions are extremely shock-sensitive. These include trinitrotoluene, hexanitrobiphenyl, hexanitrodiphenyl-amine, -sulfide or -ether. Highly chlorinated compounds behave similarly. 

Hexanitrodiphenyl oxide is soluble in water, but is sparingly soluble in alcohol and ether. It is a very stable compound, which is less sensitive to impact, bat is a more powerful explosive than picric acid. It is prepared by nitrating dinitro-, trinitro-, tetranitro- and pentanitro-substi-tuted diphenyl ether with mixed acid. 

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