Process of crystallizing 2,4,6,8,10,12-hexanitro-2,4,6,8,10,12,-

Details Process of crystallizing 2,4,6,8,10,12-hexanitro-2,4,6,8,10,12,- Process of crystallizing 2,4,6,8,10,12-hexanitro-2,4,6,8,10,12,-

1997-12-16

1999-02-23

Shah, Mukund J.

Organic compounds -- part of the class 532-570 series

Organic compounds

Unsubstituted hydrocarbyl chain between the ring and the -c-...

C07D25702

Patent

active

058745742

ABSTRACT:
A process of crystallizing CL-20 is disclosed. In the process, a wet CL-20 solvent/CL-20 solution is dried by azeotropic distillation of a CL-20 solvent/water azeotrope. Removal of water from the CL-20 solution permits crystallization of high density CL-20. A low density, CL-20 non-solvent is added to the resulting dry CL-20 solvent/CL-20 solution to cause precipitation of .epsilon.-polymorph CL-20. The CL-20 crystals are separated from the non-solvent and the solvent by adding sufficient water to displace the non-solvent and the solvent from the surface of the CL-20 crystals. In this fashion, the .epsilon.-polymorph CL-20 is made wet for later handling, packaging, and shipping.

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