Continuous process for the production of azide salts

Details Continuous process for the production of azide salts Continuous process for the production of azide salts

1990-06-29

1992-03-24

Miller, Edward A.

Compositions

Compositions containing a single chemical reactant or plural...

Inorganic reactant other than sulfur containing

423410, 558488, C01F 100, C01D 1300, C01B 2108

Patent

active

050985973

ABSTRACT:
The present invention relates to a continuous process for making an alkali metal azide or an alkaline earth metal azide which comprises the steps of: (a) reacting a first reaction mixture comprising an alkali metal nitrite or alkaline earth metal nitrite, a C1--C3 alkanol, and a high boiling acid in a first reactor to form a gaseous C1-C3 alkyl nitrite, (b) controllably feeding said gaseous C1-C3 alkyl nitrite into a second reactor and reacting in a controlled manner a second reaction mixture comprising said gaseous C1-C3 alkyl nitrite, hydrazine, and an alkali metal hydroxide or alkaline earth metal hydroxide, in the presence of an organic solvent, thereby producing an alkali metal azide or alkaline earth metal azide, and (c) removing said alkali metal azide or alkaline earth metal azide from said second reactor and replenishing said reaction mixture in said second reactor to provide a continuous, controlled process for producing said alkali metal azide or alkaline earth metal azide.

REFERENCES:
patent: 1628380 (1927-05-01), Wilcoxon et al.
patent: 2166698 (1939-07-01), Allen
patent: 3768865 (1973-10-01), Dehn
patent: 3869542 (1975-03-01), Snead et al.
patent: 4353843 (1982-10-01), Doumaux et al.
Kuhn et al., J. Am. Chem. Soc., 78, 2719-2722 (1956).
Coffey, ed., Rodd's Chemistry of Carbon Compounds, 2nd Ed., vol. I, Part B, pp. 57-60, Elsevier Publ. Co. (1964) London.

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