Lithium azide

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Lithium azide
IUPAC name
lithium azide
3D model (JSmol)
ECHA InfoCard 100.039.237
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)[1]
Solubility 20.26 g/100 g (16°C, ethanol)[1]
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
Infobox references
Lithium azide unit cell[2]

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
2NaN3 + Li2SO4 → 2LiN3 + Na2SO4[3]

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

Ba(N3)2 + Li2SO4 → 2LiN3 + BaSO4[1]


  1. ^ a b c Hála, Jiri. "IUPAC-NIST Solubility Data Series. 79. Alkali and Alkaline Earth Metal Pseudohalides" (PDF). Retrieved 31 January 2018. 
  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. 
  3. ^