Ammonium azide

Ammonium azide
Names
	Other names Ammonium trinitride
Identifiers
CAS Number	12164-94-2;
3D model (JSmol)	Interactive image;
ChemSpider	8488511;
ECHA InfoCard	100.032.093
EC Number	235-315-4;
PubChem CID	61555;
CompTox Dashboard (EPA)	DTXSID10923913 ;
	InChI InChI=1S/HN3.H3N/c1-3-2;/h1H;1H3 Key: MXZUDRZKSUUQRR-UHFFFAOYSA-N;
	SMILES N.N=[N+]=[N-];
Properties
Chemical formula	NH4N3, NH3·HN3
Molar mass	60.059 g/mol
Appearance	White crystalline solid
Odor	Odorless
Density	1.3459 g/cm3
Melting point	160 °C (320 °F; 433 K)
Boiling point	400 °C (752 °F; 673 K) (decomposes)
Structure[1]
Crystal structure	Orthorhombic
Space group	Pman
Lattice constant	a = 8.930, b = 8.642, c = 3.800
Formula units (Z)	4
Hazards
	Occupational safety and health (OHS/OSH):
Main hazards	Very toxic, explosive
Related compounds
Other anions	Ammonium nitrate; Ammonium cyanide; Ammonium carbamate
Other cations	Lithium azide; Sodium azide; Potassium azide; Rubidium azide; Caesium azide; Silver azide
	Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). verify (what is ?) Infobox references

Ammonium azide is the chemical compound with the formula NH₄N₃, 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. NH₄N₃ 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.

Structure

Ammonium azide is ionic, meaning, it consists of ammonium cation NH+4 and azide anion N−3, therefore its formula is [NH₄]⁺[N₃]⁻. It is a structural isomer of tetrazene. Ammonium azide contains about 93% nitrogen by weight.

References

Frevel, Ludo K. (1 January 1936). "The Crystal Structure of Ammonium Azide, NH₄N₃". Zeitschrift für Kristallographie - Crystalline Materials. 94 (1–6): 197. doi:10.1524/zkri.1936.94.1.197.

Yakovleva, G. S.; Kurbangalina, R. Kh.; Stesik, L. N. (1977). "Detonation properties of ammonium azide". Combustion, Explosion, and Shock Waves. 13 (3): 405. doi:10.1007/BF00740326.
Salim de Amorim, Helio; do Amaral, M. R.; Pattison P.; Ludka I. P.; Mendes, J. C. (2002). "Ammonium azide: A Commented Example of an Ab Initio Structure (Re-)Determination From X-Ray Diffraction" (PDF). Revista de la Sociedad Quimica de México. 45 (4): 313–319. Archived (PDF) from the original on 2012-04-06.
Curtius, Th. (1890). "Ueber Stickstoffwasserstoffsäure (Azoimid) N₃H". Berichte der Deutschen Chemischen Gesellschaft. 23 (2): 3023–3033. doi:10.1002/cber.189002302232.

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[1] Frevel, Ludo K. (1 January 1936). "The Crystal Structure of Ammonium Azide, NH₄N₃". Zeitschrift für Kristallographie - Crystalline Materials. 94 (1–6): 197. doi:10.1524/zkri.1936.94.1.197.