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AndersHoveland
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The so called "E" method of nitration, initially developed by Ebele, does not require any nitric acid, but does require a large excess of acetic
anhydride. Later, in 1940, independant from the research of the german Ebele, Ross and Schiessler, at McGill University, obtained RDX from
formaldehyde, ammonium nitrate and acetic anhydride in the absence of nitric acid.
"Addition of boron fluoride to the mixture promotes the initiation of the reaction and increases its safety"
"The conduct of the reaction in the presence of boron fluoride reduces the number of by-products formed"
[Chemistry and Technology of Explosives Vol. III, T. Urbański, 1967 - Pg.109]
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AndersHoveland
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I had a thought that reacting trioxane, ammonium nitrate, and anhydrous AlCl3, in ethyl ether/DMSO solvent, might form RDX.
This would essentially be no different than the conventional E method, except that AlCl3 would act as the dehydrating agent and Lewis acid catalyst
instead of the acetic anhydride and BF3.
Another thread discussing preparation of AlCl3,
http://www.sciencemadness.org/talk/viewthread.php?tid=18394
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quicksilver
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I never had any success with trioxane for a hexamine substitute (in this context). It's a shame as wasting acetic anhydride is almost sinful and of
course I attempted direct nitration. Frankly there is some material written about this in a "search" on trioxane. Good ammonia source, but won't cut
it for RDX.
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Motherload
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Can Paraformaldehyde be subsituted with Trioxane ?
I dont believe the the subsitution of Hexamine with Trioxane is implied.
I also do not see how Trioxane can be a source of ammonia.
Formaldehyde X3=Trioxane
Formaldehyde Xn=Paraformaldehyde
NH4NO3 + AeAn (90*C) + Trioxane (Instead of Paraformaldehyde)
[Edited on 29-8-2012 by Motherload]
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