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The rapid determination of nitrogen in Primary and Secondary Explosives using the Merz Method

✍ Scribed by H. Söntgerath

Book ID
105355039
Publisher
John Wiley and Sons
Year
1977
Tongue
English
Weight
339 KB
Volume
2
Category
Article
ISSN
0721-3115

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✦ Synopsis

Abstract

The rapid determination of nitrogen in explosives is basically possible using the Heraeus automatic Mikrorapid N as developed by Merz. The combustion of the substance takes place in pure oxygen and the nitrogen is determined volumetrically. However, when sodium and lead azides are analyzed in this way the residues of sodium and lead strongly attack the quartz of the combustion tube. In order to achieve the longest possible service life of the combustion tubes a joint investigation with BASF AG was undertaken to test other tube materials (e. g. steels, nickel, Alsint, Phythagoras) in addition to quartz. Pythagoras proved to be the most suitable material for the combustion of all explosives at 950° C in the same tube. For the determination of sodium azide a quartz finger (according to Merz) can be inserted in the tube which, at 500° C, collects the sodium residues.

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