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Wiktionary
tetrazene

n. 1 (context uncountable inorganic compound English) The hypothetical compound NH2-NH-N=NH 2 (context countable organic compound English) Any organic derivative of this compound; especially the explosive ''1(5-tetrazolyl)-4-guanyltetrazene hydrate''

Wikipedia
Tetrazene
''Not to be confused with tetrazine or tetracene or tetrazene explosive

Tetrazene is a chemical compound with the molecular formula N H. In IUPAC nomenclature, derivatives of this compound are known collectively as tetrazenes. The most common of such derivatives is tetrazene explosive (commonly known simply as tetrazene), which is used for sensitization of priming compositions.