PSCl3

Phosphorus trichloride, with the chemical formula PSCl3, is an inorganic compound. It is a colorless liquid at room temperature that fumes in moist air. The compound has a pungent odor. PSCl3 is soluble in many organic solvents, but it reacts with water. It is typically prepared by the reaction of phosphorus trichloride with sulfur.

PSCl3 is primarily used in the production of organophosphorus compounds. These organophosphorus compounds find applications in a variety of industries, including agriculture as pesticides and herbicides, and in the production of flame retardants and plasticizers. It serves as an intermediate in many chemical synthesis pathways. Due to its reactivity, especially with moisture, PSCl3 is handled with care and appropriate safety precautions are necessary. It is corrosive and can cause severe burns upon contact with skin and eyes. Inhalation of its vapors can also be harmful. The compound is an important industrial chemical, though its direct use is limited due to its hazardous nature.