Polyoxyethylene bis(azide) is primarily used in polymer chemistry and materials science as a crosslinking agent. Its azide functional groups enable it to form covalent bonds with other polymers, enhancing the mechanical strength and thermal stability of the resulting materials. This chemical is particularly valuable in the production of hydrogels, elastomers, and adhesives, where controlled crosslinking is essential for achieving desired properties. Additionally, it finds application in the development of advanced coatings and films, providing improved durability and resistance to environmental factors. Its versatility also extends to biomedical applications, such as in the fabrication of drug delivery systems and tissue engineering scaffolds, where precise crosslinking is crucial for biocompatibility and performance.