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| Names | |
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| Other names Barium dinitride | |
| Identifiers | |
| CAS Number | |
| 3D model (JSmol) | |
| ChemSpider | |
| ECHA InfoCard | 100.038.706 
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| EC Number |
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| PubChem CID | |
| UN number | 1687 |
| CompTox Dashboard (EPA) | |
InChI
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SMILES
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| Properties | |
| Chemical formula | Ba(N3)2 |
| Molar mass | 221.37 g/mol |
| Appearance | White crystalline solid |
| Odor | Odourless |
| Density | 2.936 g/cm |
| Melting point | 126 °C (259 °F; 399 K) |
| Boiling point | 160 °C (320 °F; 433 K) (initial decomposition) >217 °C (deflagrates) 180 °C (initial decomposition), 225 °C explosion |
| Solubility in water | 11.5 g/100 mL (0 °C) 14.98 g/100 mL (15.7 °C) 15.36 g/100 mL (20 °C) 22.73 g/100 mL (52.1 °C) 24.75 g/100 mL (70 °C) |
| Solubility in ethanol | 0.017 g/100 mL (16 °C) |
| Solubility in acetone | Insoluble |
| Solubility in ether | Insoluble |
| Structure | |
| Crystal structure | Monoclinic |
| Hazards | |
| GHS labelling: | |
| Pictograms |  
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| Signal word | Danger |
| Hazard statements | H200, H301, H315, H319, H331, H335 |
| Precautionary statements | P210, P240, P264, P280, P305+P351+P338, P310 |
| Safety data sheet (SDS) | |
Except where otherwise noted, data are given for materials in their standard state (at 25 °C , 100 kPa).
 Y verify (what is ?)
Infobox references
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Barium azide is an inorganic azide with the formula Ba(N3)2. It is a barium salt of hydrazoic acid. Like all azides, it is explosive. It is less sensitive to mechanical shock than lead azide.
Preparation
Barium azide may be prepared by reacting sodium azide with a soluble barium salt:
- BaBr2 + 2 NaN3 → Ba(N3)2 + 2NaBr
Uses
Barium azide can be used to make azides of magnesium, sodium, potassium, lithium, rubidium and zinc with their respective sulfates.
- Ba(N3)2 + Li2SO4 → 2 LiN3 + BaSO4
It can also be used as a source for high purity nitrogen by heating:
- Ba(N3)2 → Ba + 3 N2
This reaction liberates metallic barium, which is used as a getter in vacuum applications.
See also
References
- Fedoroff, Basil T.; Aaronson, Henry A.; Reese, Earl F.; Sheffield, Oliver E.; Clift, George D.; Dunkle, Cyrus G.; Walter, Hans; McLean, Dan C. (1960). Encyclopedia of Explosives and Related Items. Vol. 1. US Army Research and Development Command TACOM, ARDEC http://www.dtic.mil/get-tr-doc/pdf?AD=AD0257189.
{{cite encyclopedia}}: Missing or empty|title=(help) - Tiede, Erich (1916). "Die Zersetzung der Alkali- und Erdalkali-azide im Hochvakuum zur Reindarstellung von Stickstoff". Ber. Dtsch. Chem. Ges. (in German). 49 (2): 1742–1745. doi:10.1002/cber.19160490234.
- Audrieth, L. F. (1934). "Hydrazoic Acid and Its Inorganic Derivatives". Chem. Rev. 15 (2): 169–224. doi:10.1021/cr60051a002.
- ^ H. D. Fair; R. F. Walker, eds. (1977). Physics and Chemistry of the Inorganic Azides. Energetic Materials. Vol. 1. New York and London: Plenum Press. ISBN 9781489950093.
- Curtius, T.; Rissom, J. (1898). "Neue Untersuchungen über den Stickstoffwasserstoff N3H". J. Prakt. Chem. (in German). 58 (1): 261–309. doi:10.1002/prac.18980580113.
- Jobelius, Horst H.; Scharff, Hans-Dieter (2000). "Hydrazoic Acid and Azides". Ullmann's Encyclopedia of Industrial Chemistry. Wiley-VCH. doi:10.1002/14356007.a13_193. ISBN 9783527306732.
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