Barium azide
 | |
| Names | |
|---|---|
| Other names
barium dinitride | |
| Identifiers | |
18810-58-7  | |
| 3D model (Jmol) | Interactive image |
| ChemSpider | 56472 |
| ECHA InfoCard | 100.038.706 |
| EC Number | 242-594-6 |
| PubChem | 62728 |
| UN number | 1687 |
| |
| |
| Properties | |
| BaN6 | |
| Molar mass | 221.37 g/mol |
| Appearance | white crystalline solid |
| Odor | odorless |
| Density | 2.936 g/cm[1] |
| Melting point | 126 °C (259 °F; 399 K) |
| Boiling point | 160 °C (320 °F; 433 K) (initial decomposition)[2] >217 °C (deflagrates) 180 °C(initial decomposition),[3] 225 °C explosion |
| 11.5 g/100 mL (0°C) 14.98 g/100mL (15.7°C) 15.36 g/100mL (20°C) 22.73 g/100mL (52.1°C) 24.75 g/100mL (70°C)[4] | |
| Solubility in alcohol | 0.017 g/100 mL[5] (16°C) |
| Solubility in acetone | insoluble |
| Solubility in ether | insoluble |
| Hazards | |
| Safety data sheet | |
| EU classification (DSD) |
Highly toxic (T+) Dangerous for the environment (N) |
| R-phrases | R1, R23, R25, R36, R37, R38 |
| Lethal dose or concentration (LD, LC): | |
| LD50 (median dose) |
mg/kg (oral, rats/mice) |
| Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). | |
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| Infobox references | |
Barium azide Ba(N3)2 is an inorganic azide, is explosive, but less sensitive to mechanical shock than lead azide.
Uses
Can be used to make azides of magnesium (but its hydrolytic tendency frustrated efforts to isolate it), sodium, potassium, lithium, rubidium and zinc with their respective sulfates.[4]
- Ba(N3)2 + Li2SO4 → 2 LiN3 + BaSO4
It can also be used in the preparation of extra pure nitrogen on heating:
- Ba(N3)2 → Ba + 3 N2
References
- ↑ Fedoroff, Basil T.; Aaronson, Henry A.; Reese, Earl F.; Sheffield, Oliver E.; Clift, George D. (1960). Encyclopedia of Explosives and Related Items (Vol. 1). US Army Research and Development Command TACOM, ARDEC.
- ↑ Tiede, E. (1916). "Die Zersetzung der Alkali- und Erdalkali-azide im Hochvakuum zur Reindarstellung von Stickstoff". Ber. Dtsch. Chem. Ges. 49: 1742–1745. doi:10.1002/cber.19160490234.
- ↑ Audrieth, L. F. (1934). "Hydrazoic Acid and Its Inorganic Derivatives". Chem. Rev. 15: 169–224. doi:10.1021/cr60051a002.
- 1 2 H. D. Fair and R. F. Walker (1977). Energetic Materials, Vol. 1. Physics and Chemistry of the Inorganic Azides. New York and London: Plenum Press. doi:10.1002/prac.19770811124.
- ↑ Curtius, T.; Rissom, J. (1898). "Neue Untersuchungen über den Stickstoffwasserstoff N3H". J. Prakt. Chem. 58: 261–309. doi:10.1002/prac.18980580113.
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