Used primarily in organic synthesis as an intermediate for pharmaceuticals, agrochemicals, and dyes. Its reactivity allows introduction of chloro and fluoro groups into molecules, enhancing biological activity in drug design. Commonly employed in the preparation of fluorinated analogs of natural compounds due to the metabolic stability imparted by fluorine. Also utilized in the synthesis of specialty polymers and as a building block in the development of herbicides. Requires careful handling due to high toxicity and corrosive nature.