Copper(II) azide is a medium density explosive with the molecular formula .
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Copper azide is very explosive and is too sensitive for any practical use unless handled in solution.
Copper azide can be prepared by a metathesis reaction between water-soluble sources of and azide ions. (Spectator ions omitted in reaction below).
It can be destroyed by concentrated nitric acid to form non-explosive products, these being nitrogen, nitrogen oxides and copper(II) nitrate.