Bis(3-chloropropyl) ether is primarily used in organic synthesis as an intermediate for the production of various chemicals. It is often employed in the manufacture of polymers and resins, where it acts as a cross-linking agent to enhance material properties such as durability and thermal stability. Additionally, it finds application in the synthesis of specialty chemicals, including surfactants and plasticizers, which are used in industrial and consumer products. Its role in these processes is crucial for achieving desired chemical structures and functionalities in the final products.