Synthetic method for forming ammonium dinitrammide (ADN)

Details Synthetic method for forming ammonium dinitrammide (ADN) Synthetic method for forming ammonium dinitrammide (ADN)

1996-05-28

1997-08-19

Kumar, Shailendra

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

Organic compounds

Amino nitrogen containing

564107, 423385, 423400, C07C24100

Patent

active

056590806

ABSTRACT:
A synthetic method for ammonium dinitramide comprising a process for the formation of urea nitrate by reacting urea with diluted nitric acid; a process for the formation of nitrourea by reacting the urea nitrate with sulfuric acid; a process of reacting the nitrourea with a nitration reagent such as nitronium tetrafluoroborate, and then adding ammonia gas to the reaction mixture; and a process of filtering off the resultant by-product of crystals, concentrating its filtrate, adding ethyl acetate to this concentrated filtrate, filtering off the precipitate, concentrating again its filtrate under vacuum, and finally separating ADN as crystals by adding chloroform to the concentrated filtrate.

REFERENCES:
patent: 5198204 (1993-03-01), Bottaro et al.
patent: 5254324 (1993-10-01), Bottaro et al.
patent: 5316749 (1994-05-01), Schmitt et al.
patent: 5415852 (1995-05-01), Schmitt et al.

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