zjgbit
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what energetic materials （based on CNHOF, NO metal） is its density more than 2.0 g/cm3?
what energetic materials is its density more than 2.0 g/cm3?
CL-20?
and others???
[Edited on 19-11-2011 by zjgbit]
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VladimirLem
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How about Dinitrourea it has 1,98g/cm3<
but it seems difficult to handle :/
and by the way...density is not everything...lead azide got around 4g/cm3 
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hissingnoise
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Vlad is correct!
Methyl nitrate and nitroglycol have lower densities than nitroglycerin but both explosives are more powerful and more brisant than nitro, as this list shows!
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hissingnoise
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| Quote: | | How about Dinitrourea it has 1,98g/cm3< but it seems difficult to handle. |
DNU can auto-ignite in minutes @ RT!
It does, though, have its uses!
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VladimirLem
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hm...yes, dangerous stuff...
BUT you got an old pdf version from 1998...check out the 2001 version...seems much better^^ "found to be stable at roomtemperature" and so
on...
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AndersHoveland
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DFAP, with the structure O2NN(CH2C(NO2)2NF2)2, was synthesized by alkylation of bis(2,2-dinitroethyl)nitramine with NF2OSO2F in [cold liquified]
acetonitrile solvent. DFAP has a melting point of 103degC, and an unusually high density at 2.045 g/cm3.
http://wenku.baidu.com/view/6edba52db4daa58da0114afe.html?fr... ("Difluoramines" p201-202)
The compounds RC(NO2)2NF2 differ little from their nitro analogs, RC(NO2)3, in stability. They decompose in the gas and liquid phases at identical
rates and the decomposition is controlled by cleavage of a C-NO2 bond.
"Thermal decomposition of α-(difluoroamino)polynitroalkanes" V. N. Grebennikov, G. M. Nazin and G. B. Manelis
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DougTheMapper
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http://en.wikipedia.org/wiki/Table_of_explosive_detonation_v...
There is an option to sort by density.
CL-20 is listed at 2.02g/cc
4,4’-Dinitro-3,3’-diazenofuroxan (DDF) is listed at 2.04g/cc
Octanitrocubane (ONC) is listed at 2.0g/cc
I have heard conflicting values for at least ONC before so I have my doubts about the rest. It's a start though.
Victor Grignard is a methylated spirit.
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ZHANGNIUBI
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well...how about lead azide...
I found an organic compound with CF3- and NF2 is listed at far more than 2g/CC...(the strucure is glycoluril)..and also, a new energetic research
showed that the functional group SF5- also increase the density obviously. I remember that a compound with SF5- is listed at 2.13f/CC..
And many furozan compounds(e.x DNAF, d=2.02), glycoluril compound(e.x,TINGU,d=2.04, HHTDD,d=2.07), also has been proved to have a extremely high
density..
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AndersHoveland
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Heptanitrocubane has a measured density of 2.028 g/cm3, which is higher than the currently measured density of octonitrocubane at only 1.979 g/cm3.
However, these types of energetic compounds often have different polymorphs (different crystal packing arrangements) which have different densities.
For example, CL-20 has several polymorphs, with densities ranging between 1.91 to 2.044 g/cm3. It is quite possible that ONC could not have other, as
yet unobserved or unpublished, polymorphs with higher densities. Polymorphs are often difficult to find - the only way to see if there are other
polymorphs would be to crystallise ONC from different solvents at different temperatures, and see if the solids produced have different densities,
which can be a very time consuming process. Predictions state that the most dense polymorph of octonitrocubane could have a density around 2.1 g/cm3.
Note that "grams per cubic centimeter" can be symbolized by:
g/cm3, g cm-1, or g/c.c.
[Edited on 23-11-2011 by AndersHoveland]
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AndersHoveland
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dinitroglycoluril
| Quote: |
cis-1,4-Dinitroglycoluril (1,4-dinitrotetrahydroimidazo[4,5-d]imidazole-2,5-(1H,3H)-dione, C4H4N6O6, known as DINGU in the literature) is an important
explosive regarded as one of the potential ingredients for low vulnerability ammunition applications. the rate of detonation is as high as 8300 m/s.
tetranitroglycoluril, is described having a stability under vacuum of 6 cm3 /g/100 hours at 110° C. The compound exhibits a rate of detonation at
least equal to 9,073 meters per second [at a] density... of 1.94 [g/cm3], has a decomposition temperature of about 200° C. and is stable at a
temperature of up to 100° C. at normal pressure. It may be dried at 65° C. The rate of detonation and brisance value are superior to octogen. [It
is] soluble in dioxane to the extent of 17 g in 100 cc at 27° C. and in acetic acid to the extent of 15.7 in 100 cc at the temperature of 25° C.
[The] preparation of tetranitroglycoluril... consists of nitrating [either] glycoluril [or] dinitroglycoluril with a mixture of nitric acid and
dinitrogen pentoxide at a temperature between -5° C. and 50° C., [then] allowing the product to precipitate and filtering the product from the
reaction mixture. density 1.94 g/cm3
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AndersHoveland
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There is another bicyclic nitramine explosive, with a similar structure between TNGU and tetranitroglycoluril, that has a surprisingly high density of
2.35g/cm3.
Formula: C4H4N8O9
http://www.roguesci.org/chemlab/energetics/K-55.html
Hexagonal Boron nitride (which has a layered molecular structure like graphite) can crystallize with HNO3, giving a co-crystal structure with a high
density of 2.20g/cm3.
I am not sure how energetic this type of substance is, as the oxygen balance might not be ideal.
Reaction Mechanisms in Shocked, Intercalacated Graphite and Boron Nitride
http://hal.archives-ouvertes.fr/docs/00/25/37/51/PDF/ajp-jp4...
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franklyn
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Regarding that BN intercalate
http://www.sciencemadness.org/talk/viewthread.php?tid=1970&a...
http://www.sciencemadness.org/talk/viewthread.php?tid=1970&a...
http://www.sciencemadness.org/talk/viewthread.php?tid=1177&a...
Zeolites are oxygen based foam structured material, but if a similar compound can be
found made with nitrogen it could then be soaked in oxidizer much the same as
aluminum sponge with liquid oxygen. Some zeolites have a volume density less than
air so the density would fall short. An organic polymer such as expanded Teflon can
serve as oxidizer with a strong reducing agent such as a metal borohydride or borazine.
www.sciencemadness.org/talk/files.php?pid=184417&aid=111...
www.cder.dz/A2H2/Medias/Download/Proc%20PDF/PARALLEL%20SESSI...
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franklyn
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Molecular Level Study of Insensitive & Energetic Layered & Intercalated Materials.pdf
Attachment: Insensitive Energetic Layered & Intercalated Materials.pdf (541kB)
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