Pix
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How To Separate Hexogen From Octogen
How can ı separate hexogen from octogen ? I have just acetone as a solvent
Hexogen more soluble in acetone thus after hexogen dissolved in acetone ı filter acetone from insoluble octogen then can precipitate it ?????
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Dany
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And why you need to separate RDX from HMX?
Dany.
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Pix
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Because There are four hmx crystal forms if HMX contains unstable crystal form thus the rdx will be more sensitive to shock and friction thus I want
to separate it
[Edited on 13-1-2014 by Pix]
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Dany
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Quote: Originally posted by Pix  | Because There are four hmx crystal forms if HMX contains unstable crystal form thus the rdx will be more sensitive to shock and friction thus I want
to separate it
[Edited on 13-1-2014 by Pix] |
Don't exaggerate. if the RDX synthesis is performed via Bachmann process it will contain 10% HMX. the most stable form at room temperature is the beta
form (which is the most dense between the 3 other polymorphs). in order to obtain the other polymorphs, you need to recrystallize the HMX with special
solvent or to heat the beta form to higher temperature where phase transition occur. A good study on HMX polymorph is done by Howard H. CADY see:
Study on the polymorphs of HMX
the presence of HMX in RDX is not a concern. The HMX will boost the detonation power of the RDX. If you insist to perform the separation you need
solvent other than acetone (see patent US 3676425 A). Or you need to synthesize pure RDX from the 1,3,5-trinitroso-1,3,5-triazacyclohexane. the
procedure is described here:
Synthesis of pure RDX
Dany.
[Edited on 13-1-2014 by Dany]
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Pix
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Thank you Dany
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Pulverulescent
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| Quote: | | -in order to obtain the other polymorphs, you need to recrystallize the HMX with special solvent or to heat the beta form to higher temperature where
phase transition occur. |
The stable ß-HMX form will convert to the dangerously sensitive δ-HMX at temp.s as low as 150°C . . .
'Nuff said?
"I know not with what weapons World War III will be fought, but World War IV will be fought with sticks and stones"
A Einstein
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