This page uses content from Wikipedia and is licensed under CC BY-SA.

Copper(II) azide

Copper(II) azide[1]
Copper (II) azide.JPG
IUPAC name
Copper(II) azide
3D model (JSmol)
Molar mass 147.586 g/mol
Appearance brown orthorhombic crystals
Density 2.6 g/cm 3
Melting point (explodes)
GHS pictograms GHS01: ExplosiveGHS06: Toxic
GHS Signal word Danger
NFPA 704 (fire diamond)
Flammability code 0: Will not burn. E.g. waterHealth code 3: Short exposure could cause serious temporary or residual injury. E.g. chlorine gasReactivity code 4: Readily capable of detonation or explosive decomposition at normal temperatures and pressures. E.g. nitroglycerinSpecial hazards (white): no codeNFPA 704 four-colored diamond
NIOSH (US health exposure limits):
PEL (Permissible)
TWA 1 mg/m3 (as Cu)[2]
REL (Recommended)
TWA 1 mg/m3 (as Cu)[2]
IDLH (Immediate danger)
TWA 100 mg/m3 (as Cu)[2]
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).
☑Y verify (what is ☑Y☒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 concentrated nitric acid to form non-explosive products, these being nitrogen, nitrogen oxides and copper(II) nitrate.


  1. ^ Lide, David R. (1998), Handbook of Chemistry and Physics (87 ed.), Boca Raton, Florida: CRC Press, pp. 4–55, ISBN 0-8493-0594-2
  2. ^ a b c NIOSH Pocket Guide to Chemical Hazards. "#0150". National Institute for Occupational Safety and Health (NIOSH).