Phosphorus trichloride
…to phosphorus pentachloride (PCl5), thiophosphoryl chloride (PSCl3), or phosphorus oxychloride (POCl3). PCl3 reacts vigorously with water to form phosphorous acid (H3PO3) and hydrochloric acid: Phosphorus trichloride is the precursor to organophosphorus compounds. It reacts with phenol to give triphenyl phosphite…