1,9-Bis(acryloyloxy)nonane is primarily used as a crosslinking agent in the production of polymers and resins. It enhances the mechanical properties, thermal stability, and chemical resistance of the final materials. This chemical is often incorporated into coatings, adhesives, and sealants to improve their durability and performance. It is also utilized in the synthesis of advanced materials for dental composites and biomedical applications, where high strength and biocompatibility are essential. Additionally, it plays a role in the development of specialty plastics and elastomers, contributing to their flexibility and resilience. Its ability to form strong, stable networks makes it valuable in industries requiring robust and long-lasting materials.