Silver azide
| Names | |
|---|---|
| IUPAC name
Silver azide
| |
| Properties | |
| AgN3 | |
| Molar mass | 149.888 g/mol |
| Appearance | Colorless solid |
| Odor | Odorless |
| Density | 4.42 g/cm3 |
| Melting point | 250 °C (482 °F; 523 K) (detonates) |
| Boiling point | Detonates |
| 0.008393 g/100 ml (18 °C)[1] | |
| Solubility | Very soluble in HF |
| Thermochemistry | |
| Std molar
entropy (S |
-230.87 J·K−1·mol−1 |
| Std enthalpy of
formation (ΔfH |
307.76 kJ/mol[2] |
| Hazards | |
| Safety data sheet | None |
| Related compounds | |
| Related compounds
|
Lead(II) azide |
| Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). | |
| Infobox references | |
Silver azide is an explosive chemical compound with the formula AgN3.
Contents
Properties
Chemical
Silver azide decomposes explosively, releasing nitrogen gas:
- 2 AgN3 → 2 Ag + 3 N2
Physical
Silver azide is a white solid insoluble in water.
Explosive
Silver azide is very shock and friction-sensitive. It has a detonation velocity of 4,000 m/s.
Availability
Silver azide is not sold and has to be prepared in situ.
Preparation
Silver azide can be prepared by treating an aqueous solution of silver nitrate with sodium azide. The silver azide precipitates as a white solid, leaving sodium nitrate in solution.
- AgNO3 + NaN3 → AgN3 + NaNO3
Projects
- Make small explosive demonstrations
Handling
Safety
Silver azide, like most heavy metal azides, is a dangerous primary explosive. Decomposition can be triggered by exposure to ultraviolet light or by impact.
Storage
Do not store this compound!
Disposal
Silver azide, like all azides can be neutralized with a solution of nitrous acid. Ceric ammonium nitrate can also be used.
Bleach has been shown to be effective against azides as well.[4]
References
- ↑ Riesenfeld, E. H.; Mueller, F.; Zeitschrift fuer Elektrochemie; vol. 41; (1935); p. 87 - 92
- ↑ Waddington, T. C.; Gray, P.; Compt. Rend. 27e Congr. Intern. Chim. Ind., Brussels 1954, Bd. 3, S. 327/30; C. A.; (1956); p. 16328
- ↑ Gray, P.; Waddington, T. C.; Proceedings of the Royal Society of London, Series A: Mathematical, Physical and Engineering Sciences; vol. 235; (1956); p. 106 - 119
- ↑ https://www.ncbi.nlm.nih.gov/m/pubmed/20667654/
