N-Ethyl-N-methylaniline is primarily used as an intermediate in the synthesis of dyes and pigments. It plays a key role in the production of colorants for textiles, inks, and plastics, contributing to vibrant and stable hues. Additionally, it is employed in organic synthesis to create various chemical compounds, including pharmaceuticals and agrochemicals. Its application extends to research and development, where it serves as a building block for novel materials and chemical processes.