What is the formula for phosphorus trichloride?

The formula for phosphorus trichloride is PCl₃. It is a colorless, fuming liquid and is highly reactive with water. It has a molecular weight of 137.32 g/mol and a boiling point of 76.1°C. Phosphorus trichloride is used as a reagent in organic chemistry for the conversion of alcohols to alkyl chlorides and in the manufacture of insecticides and herbicides. It is also used in the production of plasticizers, flame retardants, and oil additives. In addition, it is an important intermediate in the synthesis of phosphine and phosphorus oxychloride.