Lithium azide

Lithium azide

Li+       N−3 Lithium azide unit cell
Names
IUPAC name lithium azide
Identifiers
CAS Number	19597-69-4
3D model (JSmol)	Interactive image
ChemSpider	79536
ECHA InfoCard	100.039.237
PubChem CID	88163
CompTox Dashboard (EPA)	DTXSID8066509
InChI InChI=1S/Li.N3/c;1-3-2/q+1;-1
SMILES [Li+].[N-]=[N+]=[N-]
Properties
Chemical formula	LiN3
Molar mass	48.96 g·mol−1
Melting point	115 °C (239 °F; 388 K)
Solubility in water	36.12 g/100 g (10 °C) 62.07 g/100 g (15.5 °C) 66.41 g/100 g (16 °C)
Solubility	20.26 g/100 g (16 °C, ethanol)
Hazards
GHS labelling:
Pictograms
Safety data sheet (SDS)	External SDS
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). Infobox references

Lithium azide is the lithium salt of hydrazoic acid. It is an unstable and toxic compound that decomposes into lithium and nitrogen when heated.

Preparation

It can be prepared by metathesis reaction between sodium azide and lithium nitrate or lithium sulfate solutions:

NaN₃ + LiNO₃ → LiN₃ + NaNO₃

2 NaN₃ + Li₂SO₄ → 2 LiN₃ + Na₂SO₄

It can also be prepared by reacting lithium sulfate with barium azide.

Ba(N₃)₂ + Li₂SO₄ → 2 LiN₃ + BaSO₄