Azide

In chemistry, azide (/ˈzd/, AY-zyd) is a linear, polyatomic anion with the formula N3 and structure N=N+=N. It is the conjugate base of hydrazoic acid HN3. Organic azides are organic compounds with the formula RN3, containing the azide functional group. The dominant application of azides is as a propellant in air bags.