Lithium azide

Lithium azide
Names

Li⁺ N−3 Lithium azide unit cell^[1]
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)^[2]
Solubility	20.26 g/100 g (16 °C, ethanol)^[2]
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

Chemical compound

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^[3]

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

Ba(N₃)₂ + Li₂SO₄ → 2 LiN₃ + BaSO₄^[2]

^ Pringle, G. E.; Noakes, D. E. (February 1968). "The crystal structures of lithium, sodium and strontium azides". Acta Crystallogr. B. 24 (2): 262–269. doi:10.1107/S0567740868002062.
^ ^a ^b ^c Hála, Jiri. "IUPAC-NIST Solubility Data Series. 79. Alkali and Alkaline Earth Metal Pseudohalides" (PDF). nist.gov. Archived from the original (PDF) on 1 February 2018. Retrieved 31 January 2018.
^ "Λ » LambdaSyn – Darstellung von Lithiumazid".