Copper(II) azide

Copper(II) azide

Names
IUPAC name Copper(II) azide
Identifiers
CAS Number	14215-30-6 Y
3D model (JSmol)	Interactive image Interactive image
ChemSpider	21106430 Y
PubChem CID	57348354
UNII	43SX07O4UP Y
CompTox Dashboard (EPA)	DTXSID00931365
InChI InChI=1S/Cu.2N3/c;2*1-3-2/q+2;2*-1 Y Key: SXHYOTRZGGGMEV-UHFFFAOYSA-N Y InChI=1/Cu.2N3/c;2*1-3-2/q+2;2*-1 Key: SXHYOTRZGGGMEV-UHFFFAOYAL
SMILES [N-]=[N+]=[N-][Cu+2][N-]=[N+][N-] [Cu+2].[N-]=[N+]=[N-].[N-]=[N+]=[N-]
Properties
Chemical formula	Cu(N3)2
Molar mass	147.586 g/mol
Appearance	brown orthorhombic crystals
Density	2.6 g/cm3
Melting point	Explodes when heated
Hazards
GHS labelling:
Pictograms
Signal word	Danger
NFPA 704 (fire diamond)	3 0 4
NIOSH (US health exposure limits):
PEL (Permissible)	TWA 1 mg/m3 (as Cu)
REL (Recommended)	TWA 1 mg/m3 (as Cu)
IDLH (Immediate danger)	TWA 100 mg/m3 (as Cu)
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 YN ?) Infobox references

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

Uses

Copper azide is very explosive and is too sensitive for any practical use unless handled in solution.

Preparation

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 N−3 → 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.