Process for making high purity hydroxylammonium nitrate

Details Process for making high purity hydroxylammonium nitrate Process for making high purity hydroxylammonium nitrate

C - Chemistry, Metallurgy

01

C

C01C 1/18 (2006.01) C01B 21/14 (2006.01) C06B 31/00 (2006.01) C06B 47/00 (2006.01)

Patent

CA 2115453

2115453 9401362 PCTABS00030 The present invention concerns a method for making energetic oxidizer salts and solutions thereof, and in particular relates to processes for making aqueous solutions of hydroxylammonium nitrate in high purity suitable for use in making liquid gun propellants. The present alcohol-free process yields high purity alcohol-free hydroxylammonium nitrate by neutralizing an aqueous nitric acid solution (20-70 % wt./wt.) with an alcohol-free aqueous hydroxylamine solution at temeperatures ranging from above -50 ·C to above ambient to produce the desired alcohol-free aqueous hydroxylammonium nitrate solution in a usable concentration and in high purity. The process is economical, environmentally acceptable, and facile.

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