The compound PCl3 is known as phosphorus trichloride.
Phosphorus trichloride is an inorganic compound that consists of one phosphorus atom bonded to three chlorine atoms. It is a colorless to yellowish liquid with a pungent odor. This compound is often used in chemical synthesis and as a reagent in the production of other phosphorus-containing chemicals. The ‘tri’ in its name indicates that there are three chlorine atoms in the molecule, reflecting its molecular structure.