Distillation technique for removal of UDMH from water

Details Distillation technique for removal of UDMH from water Distillation technique for removal of UDMH from water

1978-05-22

1978-11-07

Wolk, Morris O.

Distillation: processes, separatory

Adding material to distilland except water or steam per se

At least two materials

203 51, 203 63, 203 37, 260583B, B01D 340, C07C 8526, C07C 8724

Patent

active

041244524

ABSTRACT:
A process for extracting essentially pure unsymmetrical dimethyl hydrazine UDMH) from a solution containing UDMH, water, and other volatiles and non-volatiles, comprises charging a distillation stillpot with the UDMH solution, mixing into the solution sufficient caustic sodium hydroxide so as to cause the solution to separate into a two layer system, mixing isopropanol into the two layer system, and distilling off the essentially pure UDMH distillate.

REFERENCES:
patent: 2698286 (1954-12-01), Bircher, Jr.
patent: 2799631 (1957-07-01), Von Hessert
patent: 2858254 (1958-10-01), Nicolaisen et al.
patent: 2876173 (1959-03-01), Nicolaisen
patent: 2963407 (1960-12-01), Lewis
patent: 3098017 (1963-07-01), Walter, Jr. et al.
patent: 3102144 (1963-08-01), Horvitz
patent: 3274251 (1966-09-01), Besson et al.
patent: 4046812 (1977-09-01), Langer et al.

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