N,N-Dimethyl-m-toluidine is primarily used as an accelerator in the polymerization of resins, particularly in the curing of dental and bone cements. It helps speed up the hardening process, making it essential in dental applications where quick setting times are crucial. Additionally, it is employed in the production of coatings and adhesives, where it enhances the curing efficiency of epoxy and acrylic systems. Its role in these industries ensures improved performance and durability of the final products.