Copper(II) azide

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Copper (II) azide.JPG


Copper(II) azide
IUPAC name
Copper(II) azide
14215-30-6 YesY
ChemSpider 21106430 YesY
Jmol-3D images Image
Molar mass 147.586 g/mol
Appearance brown orthorhombic crystals
Density 2.6 g/cm 3
Melting point (explodes)
EU classification Toxic (T)
Explosive (E)
NFPA 704
Flammability code 0: Will not burn. E.g., water Health code 3: Short exposure could cause serious temporary or residual injury. E.g., chlorine gas Reactivity code 4: Readily capable of detonation or explosive decomposition at normal temperatures and pressures. E.g., nitroglycerin Special hazards (white): no codeNFPA 704 four-colored diamond
Flash point  ?
Related compounds
Other cations
Lead(II) azide
Silver azide
Sodium azide
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
 YesY verify (what isYesY/N?)
Infobox references

Copper(II) azide is a medium density explosive with the molecular formula Cu(N3)2.


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 Cu2+ and azide ions. (Spectator ions omitted in reaction below).

Cu2+ + 2 N3 → Cu(N3)2

It can be destroyed by nitric acid to form non-explosive products:

Cu(N3)2 + 2HNO3 → 3N2 + 2NO2 + Cu(OH)2


  1. ^ Lide, David R. (1998), Handbook of Chemistry and Physics (87 ed.), Boca Raton, FL: CRC Press, pp. 4–55, ISBN 0-8493-0594-2