The chemical formula of ammonium nitrate is NH4NO3, CAS number 6484-52-2, which is colorless, odorless, transparent crystal or white crystal. It is easily soluble in water and absorbs heat when dissolved. It is also soluble in acetone and ammonia and slightly soluble in ethanol. It is non-flammable by itself, but has strong oxidizing properties. It is easy to explode when exposed to combustibles, reducing agents, high temperatures or impact, and is toxic. Ammonium nitrate is widely used in agriculture as a high-nitrogen fertilizer, industrially used to make explosives and fireworks, and is also used in medicine, refrigeration and other industries.