Ammonium azide
From Wikipedia, the free encyclopedia
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| Names | |
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| IUPAC name
Ammonium azide | |
| Other names
Ammonium trinitride | |
| Identifiers | |
3D model (JSmol) |
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| ChemSpider | |
| ECHA InfoCard | 100.032.093 |
| EC Number |
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PubChem CID |
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CompTox Dashboard (EPA) |
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| Properties | |
| [NH4]N3 | |
| Molar mass | 60.060 g·mol−1 |
| Appearance | Colorless or white crystalline solid |
| Odor | Odorless |
| Density | 1.3459 g/cm3 |
| Melting point | 160[1] °C (320 °F; 433 K) |
| Boiling point | 400 °C (752 °F; 673 K) (decomposes) |
| 20.2 g/100 mL (30 °C)[1] | |
| Solubility | Insoluble in diethyl ether and benzene[2] |
| Solubility in methanol | 3.3 g/100 mL (20 °C)[2] |
| Solubility in ethanol | 1.06 g/100 mL (20 °C)[2] |
| Structure[3] | |
| Orthorhombic | |
| Pman | |
a = 8.930, b = 8.642, c = 3.800 | |
Formula units (Z) |
4 |
| Thermochemistry[1] | |
Std molar entropy (S⦵298) |
112.5 J/(mol·K) |
Std enthalpy of formation (ΔfH⦵298) |
115.5 kJ/mol |
Gibbs free energy (ΔfG⦵) |
274.2 kJ/mol |
| Hazards | |
| Occupational safety and health (OHS/OSH): | |
Main hazards |
Very toxic, explosive |
| Related compounds | |
Other anions |
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Other cations |
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Related compounds |
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Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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Ammonium azide is the chemical compound with the formula [NH4]N3, being the salt of ammonia and hydrazoic acid. Like other inorganic azides, this colourless crystalline salt is a powerful explosive, although it has a remarkably low sensitivity. [NH4]N3 is physiologically active and inhalation of small amounts causes headaches and palpitations. It was first obtained by Theodor Curtius in 1890, along with other azides.
