N,N-Diethylaniline is primarily used as an intermediate in the synthesis of dyes and pigments, particularly in the production of triphenylmethane and azo dyes. These dyes are widely applied in the textile, paper, and leather industries for coloring purposes. Additionally, it serves as a precursor in the manufacture of certain pharmaceuticals, where it contributes to the development of active pharmaceutical ingredients. In the field of organic chemistry, it is utilized as a reagent in various chemical reactions, including alkylation and acylation processes. Furthermore, N,N-Diethylaniline finds application in the production of agrochemicals, such as herbicides and pesticides, where it acts as a key building block in their synthesis. Its role in these industries highlights its importance as a versatile chemical intermediate.