Lithium azide is the lithium salt of hydrazoic acid. It is an unstable and toxic compound that decomposes into lithium and nitrogen when heated.
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| IUPAC name
lithium azide
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| Identifiers | |
3D model (JSmol)
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| ChemSpider | |
| ECHA InfoCard | 100.039.237 |
PubChem CID
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CompTox Dashboard (EPA)
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| 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: | |
 
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| 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).
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Preparation
editIt 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- ^ 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".
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