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Chemical aspects of the hypergolic preignition reactions of some hybrid hypergols

✍ Scribed by S.R. Jain; G. Rajendran

Publisher
Elsevier Science
Year
1987
Tongue
English
Weight
506 KB
Volume
67
Category
Article
ISSN
0010-2180

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✦ Synopsis

A new class of solid compounds, viz., bisthiocarbonohydrazones and thiosemicarbazones, have been found to be hypergolic with fuming nitric acid. The observed ignition delays of these hypergols have been compared with those of the monothiocarbonohydrazones-nitric acid systems and explained in terms of the chemical reactions--neutralization, oxidation, and nitration--occurring in the preignition stage, p-Nitrobenzoic acid, benzoic acid, benzaldehyde, sulfur trioxide, nitrogen dioxide, and nitrogen have been isolated as preignition reaction intermediates in the monoand bisbenzaldehydethiocarbonohydrazone-nitric acid systems. A scheme of reactions occurring in the preignition stage is proposed based on the formation of these products.

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