Applications It is used for making phosphorus oxychloride by oxidising it with oxygen. It is used for production of phosphate ester insecticides. It is used in the production of chlorinated compounds like phosphorous penta chloride, phosphoryl chloride, thiophosphoryl chloride and pseudohalogens. Description Phosphorus trichloride is a colourless transparent motile liquid. It is the most important phosphorus halide. Phosphorus trichloride (PCl3)…