Diphenylphosphoryl azide (DPPA) is an organic compound. It is widely used in synthesis of other organic compounds.[1] Diphenylphosphoryl azide has been obtained by reaction of the phosphorochloridate with sodium azide.

Lead azide (Pb(N₃)₂) is an inorganic compound. More so than other azides, Pb(N₃)₂ is explosive. It is used as a detonators to initiate secondary explosives. In a commercially usable form, it is a white-to-buff powder.

Azide is the anion with the formula N₃−. It is the conjugate base of hydrazoic acid. N₃− is a linear anion that is isoelectronic with CO₂ and N₂O. Per valence bond theory, azide can be described by several resonance structures, an important one being N−=N+=N−.

Potassium Azide is the chemical compound having the formula KN3. It is a salt of hydrazoic acid, and crystallizes in a tetragonal structure.

Sodium azide is the inorganic compound with the formula NaN₃. This colourless azide salt is the gas-forming component in many car airbag system