Crystallization of beta HMX

Organic compounds -- part of the class 532-570 series – Organic compounds – Unsubstituted hydrocarbyl chain between the ring and the -c-...

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C07D25702

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active

047850949

ABSTRACT:
Method of directly precipitating substantially pure beta HMX from a substantially anhydrous nitric acid solution without forming and recrystallizing polymorphic HMX. HMX dissolved in a solvent consisting essentially of anhydrous nitric acid is added to water which is seeded with crystals of beta HMX to substantially completely precipitate all the HMX from solution as beta HMX without forming crystals of the other polymorphic forms of HMX. A preferred reaction and apparatus for preparing HMX in anhydrous nitric acid is also disclosed.

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Bachmann et al., CA 46: 2084d to 2085a.
Kodak, CA67(16): 75044j.
Lee et al., CA 58a: 5448g.
Siele et al., "Alternative Processes for HMX Manufacture", Technical Report ARLCD-T5-78008 (Oct. 1979).

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