Ammonium azide

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Ammonium azide
Ammonium azide.png
Ball-and-stick model of the ammonium cation
Ball-and-stick model of the azide anion
Other names
Ammonium trinitride
ECHA InfoCard 100.032.093
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)
Main hazards Very toxic, explosive
Related compounds
Other anions
Ammonium nitrate
Ammonium cyanide
Other cations
Sodium azide
Potassium azide
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

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.


Ammonium azide is ionic. It is scarcely soluble in water. Ammonium azide contains about 93% nitrogen by weight as ammonium cation and azide anion. It is a structural isomer of tetrazene.