Method of preparation of 2,6-bis(picrylamino)-3,5-dinitropyridine
A method for preparing 2,6-bis(picrylamino)-3,5-dinitropyridine (PYX) which includes the steps of first dissolving crystalline PYX in a primary solvent in which the solvent used is selected from the group consisting of pyridine, dimethylformamide, methylsulfoxide or mixtures thereof. The primary sol...
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Main Author | |
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Format | Patent |
Language | English |
Published |
08.08.1989
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Subjects | |
Online Access | Get full text |
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Summary: | A method for preparing 2,6-bis(picrylamino)-3,5-dinitropyridine (PYX) which includes the steps of first dissolving crystalline PYX in a primary solvent in which the solvent used is selected from the group consisting of pyridine, dimethylformamide, methylsulfoxide or mixtures thereof. The primary solvent system is then combined with a second solvent in which the PYX is substantially insoluble, but which, in admixture with the primary solvent, forms a true solution of the PYX, referred to as the secondary solution. A third solvent is then added to the binary solvent system, which third solvent is soluble with the binary solvent system but which promotes precipitation of PYX in a form which exhibits improved characteristics as an explosive. |
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Bibliography: | Application Number: US19870131971 |