The Collaborative International Dictionary
ethyl azide
azide \az"ide\ n. (Chem.) any chemical compound containing the azido group -N3, such as sodium azide (ionic and inorganic) or ethyl azide (organic and nonionic).
Wikipedia
Ethyl azide
Ethyl azide (CHN) is an explosive compound sensitive to rapid heating, shock or impact. It has exploded when heated to room temperature. When heated to decomposition it emits toxic fumes of NOx.
It is irritating to eyes, respiratory system and skin.