Jump to content

Lithium azide

From Wikipedia, the free encyclopedia
Lithium azide

  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:
GHS01: Explosive 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

[edit]

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

[edit]
  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. Archived from the original (PDF) on 1 February 2018. Retrieved 31 January 2018.
  3. ^ "Λ » LambdaSyn – Darstellung von Lithiumazid".