A less reviewed explosive with VoD 10km/s

It is my first time to know about this EM. Thx a lot.

will this link help you : Link
I am thinking to prepare it but I think it is a bit sensitive.

Did you try it before?




[Edited on 3-1-2016 by ecos]

Did find these though

Quote: Originally posted by ecos

It is my first time to know about this EM. Thx a lot. will this link help you : Link I am thinking to prepare it but I think it is a bit sensitive. Did you try it before? [Edited on 3-1-2016 by ecos]

Unfortunately , I couldn't find any nitromethane in stores in my country
I will not be able to synthesis anything :'(

Quote: Originally posted by ecos

Unfortunately , I couldn't find any nitromethane in stores in my country I will not be able to synthesis anything :'(

Quote: Originally posted by franklyn

a patent ( I believe I've seen this posted somewhere ) https://translate.google.com/translate?hl=en&sl=zh-CN&am... Synthesis of 3-Amino-4-nitrofurazan by an Improved Method , is a chinese paper www.energetic-materials.org.cn/hnclen/ch/reader/create_pdf Synthesis of Energetic Furazan Derivatives https://dspace.iup.edu/bitstream/handle/2069/761/Bryan%20J.%... Calculation of Thermochemical and Explosive Characteristics of Furoxanes is also here http://yadda.icm.edu.pl/baztech/element/bwmeta1.element.bazt... or here www.wydawnictwa.ipo.waw.pl/cejem/Number-3-4-2008/Zhukov.pdf

Quote: Originally posted by DubaiAmateurRocketry

I see little information on DNAF on this forum 4,4'-Dinitro-3,3'-diazenofuroxan, AKA (4,4'-DiNitro-3,3'-diAzenoFuroxan)

DAR,

The synthesis of 4,4'-dinitro-3,3'-azofuroxan or 4,4'-Dinitro-3,3'-diazenofuroxan (DNAF) is a lengthy multi-step procedure. I've detailed the synthesis of DNAF in the following scheme:



The most important precursor for the synthesis of DNAF is 4-amino-3-azidocarbonylfuroxan (3), synthesized from Diethyl furoxandicarboxylate (2) which in turn can be obtained from Ethyl acetoacetate (1). Procedure on how (2) can be obtained from (1) can be found in reference [1].

Compound (3) can undergo an oxidative coupling in the presence of KMnO₄ to generate (4). A Curtius rearrangement is obtained when (4) is heated in Dioxane in the presence of water. This rearrangement led the formation of the corresponding diamino derivative (5) in 69% yield. The final step is the oxidation of the diamino to the corresponding dinitro and this by using harsh condition [2]: 85% concentration of hydrogen peroxide in 96% sulfuric acid all this in the presence of sodium tungstate. The oxidation step as seen in the scheme above is inefficient due to the low yield of this reaction (26%).

As claimed in [2], the detonation velocity and pressure of DNAF (at 1.97 g/cm³⁾ are D= 9.70 km/s, P= 470 kbar. The single crystal density of DNAF is 2.002 g/cm³ (obtained from X-ray diffraction data). At this density the detonation velocity will reach 10 km/s.

DNAF and other furazan/furoxan derivatives were investigated as ingredient in composite propellant formulation, for more information see the attached file below.


References:

[1] Snyder, H. R., & Boyer, N. E. (1955). The Synthesis of Furoxans from Aryl Methyl Ketones and Nitric Acid1. Journal of the American Chemical Society, 77(16), 4233-4238. doi: 10.1021/ja01621a021

[2] Makhova, N. N., & Kulikov, A. S. (2013). Advances in the chemistry of monocyclic amino- and nitrofuroxans. Russian Chemical Reviews, 82(11), 1007.

Dany.

Attachment: Propellants formulations.pdf (284kB)
This file has been downloaded 680 times

Quote: Originally posted by DubaiAmateurRocketry

Quote: Originally posted by ecos   Unfortunately , I couldn't find any nitromethane in stores in my country I will not be able to synthesis anything :'( nitromethane should be easy to synthesize and purchase, furthermore, I don't think you have to have nitromethane to synthesize it. If i remember correctly, furazans has more than one method of synthesis and you can possibily start from glyoxime if you can find it.

I would need NM to synthesis Hydroxylamine Hydrochloride!
do you know simple route to synthesis NM ? I think i need to nitrate propane and then filter. This is not a simple task.
NM is not sold in all countries. I also don't know where to get glyoxime !
so sad

[Edited on 12-1-2016 by ecos]

Quote: Originally posted by ecos

Quote: Originally posted by DubaiAmateurRocketry   Quote: Originally posted by ecos   Unfortunately , I couldn't find any nitromethane in stores in my country I will not be able to synthesis anything :'( nitromethane should be easy to synthesize and purchase, furthermore, I don't think you have to have nitromethane to synthesize it. If i remember correctly, furazans has more than one method of synthesis and you can possibily start from glyoxime if you can find it. I would need NM to synthesis Hydroxylamine Hydrochloride! do you know simple route to synthesis NM ? I think i need to nitrate propane and then filter. This is not a simple task. NM is not sold in all countries. I also don't know where to get glyoxime ! so sad [Edited on 12-1-2016 by ecos]