Purification of 1,1-dimethyl hydrazine (UDMH) containing formald

Details Purification of 1,1-dimethyl hydrazine (UDMH) containing formald Purification of 1,1-dimethyl hydrazine (UDMH) containing formald

1978-07-03

1979-05-15

Bascomb, Jr., Wilbur L.

Distillation: processes, separatory

Adding material to distilland except water or steam per se

Organic compound

203 14, 203 35, 203 37, 203 43, 203 63, 203 64, 203 69, 203 70, 260583B, B01D 336, C07C10902, C07C10914

Patent

active

041546580

ABSTRACT:
The formaldehyde hydrazone of UDMH can be removed from an aqueous solution f UDMH by codistillation with a hydrocarbon or other solvent which is inert to both acidic or basis mediums. The solvent can then be recovered from the hydrazone solution by washing with an acid solution and the solvent can be reused.

REFERENCES:
patent: 2676911 (1954-04-01), Nicolaisen
patent: 2698286 (1954-12-01), Bircher, Jr.
patent: 2806851 (1957-09-01), Sisler et al.
patent: 2876173 (1959-03-01), Nicolaisen
patent: 2963407 (1960-12-01), Lewis
patent: 3012948 (1961-12-01), Horvitz et al.
patent: 3098017 (1963-07-01), Walter, Jr. et al.
patent: 4038321 (1977-07-01), Thatcher et al.

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