Crystallization of beta hmx from nitric acid

Details Crystallization of beta hmx from nitric acid Crystallization of beta hmx from nitric acid

C - Chemistry, Metallurgy

07

D

260/237.7

C07D 257/02 (2006.01)

Patent

CA 1300134

1374-14-00 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 substan- tially 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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