Lithium azide
Azid lithný2.png
Lithium-azide-unit-cell-3D-balls.png

  Li+       N3
Lithium azide unit cell[1]
Names
IUPAC name
lithium azide
Identifiers
3D model (JSmol)
ChemSpider
ECHA InfoCard 100.039.237 Edit this at Wikidata
  • InChI=1S/Li.N3/c;1-3-2/q+1;-1
  • [Li+].[N-]=[N+]=[N-]
Properties
LiN3
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]
Hazards
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.

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]

References

  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). nist.gov. Retrieved 31 January 2018.
  3. ^ "Λ » LambdaSyn – Darstellung von Lithiumazid".