<unk> , also known as hydrogen azide or azoimide, is a compound with the chemical formula . It is a colorless, volatile, and explosive liquid at room temperature and pressure. It is a compound of nitrogen and hydrogen, and is therefore a pnictogen hydride. It was first isolated in 1890 by Theodor Curtius. The<unk>  has few applications, but its conjugate base, the azide ion, is useful in specialized processes.<unk> , like its fellow mineral<unk> s, is soluble in water. Undiluted<unk>  is dangerously explosive with a standard enthalpy of formation ΔfHo (l, 298K) = +264 kJmol−1. When dilute, the gas and aqueous solutions (<10%) can be safely prepared but should be used immediately; because of its low boiling point,<unk>  is enriched upon evaporation and condensation such that dilute solutions incapable of explosion can form droplets in the headspace of the container or reactor that are capable of explosion.
Hydrazoic acid
Gadobenic acid
Indeloxazine
Sakacin
Palifermin
Cafaminol
Viloxazine
Itruvone