Fosforoxyhalider

Fosforoxyhalider are a class of chemical compounds with the general formula POX₃, where X represents a halogen atom such as chlorine, bromine, or fluorine. The central atom is phosphorus, which is bonded to three halogen atoms and one oxygen atom. These compounds are also known as phosphorus oxyhalides. The most common and well-known example is phosphorus oxychloride (POCl₃), where X is chlorine. Phosphorus oxybromide (POBr₃) and phosphorus oxyfluoride (POF₃) are also known members of this group.

These substances are typically colorless liquids or gases with pungent odors. They are highly reactive and readily hydrolyze in the presence of water, producing phosphoric acid and the corresponding hydrogen halide. For instance, phosphorus oxychloride reacts vigorously with water to form phosphoric acid and hydrochloric acid. Due to their reactivity, fosforoxyhalider are often used as intermediates in the synthesis of other chemical compounds. Phosphorus oxychloride, in particular, is widely employed in the production of phosphates, flame retardants, and pharmaceuticals. Their handling requires caution due to their corrosive and toxic nature.