Used primarily as an intermediate in the synthesis of pharmaceuticals and agrochemicals. Its reactive chlorine atoms allow for further functionalization in organic reactions, making it valuable in building complex molecules. Commonly employed in the preparation of esters and amides that serve as key building blocks in drug development. Also utilized in the production of specialty polymers and cross-linking agents due to its ability to introduce chloromethyl groups into organic structures. Its high reactivity requires careful handling during industrial processes.