Lithium azide

  Li+       N3
Lithium azide unit cell[1]
IUPAC name
lithium azide
3D model (JSmol)
ECHA InfoCard 100.039.237 Edit this at Wikidata
  • InChI=1S/Li.N3/c;1-3-2/q+1;-1
  • [Li+].[N-]=[N+]=[N-]
Molar mass 48.96 g·mol−1
Melting point 115 °C (239 °F; 388 K)
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]
GHS labelling:
GHS06: Toxic
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).

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


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]


  1. ^ 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.
  2. ^ a b c Hála, Jiri. "IUPAC-NIST Solubility Data Series. 79. Alkali and Alkaline Earth Metal Pseudohalides" (PDF). Archived from the original (PDF) on 1 February 2018. Retrieved 31 January 2018.
  3. ^ "Λ » LambdaSyn – Darstellung von Lithiumazid".