1-Butylnaphthalene is primarily used as an intermediate in the synthesis of more complex chemical compounds. It finds application in the production of dyes and pigments, where it serves as a key building block for creating colorants with specific properties. Additionally, it is utilized in the development of organic semiconductors, which are essential components in electronic devices like OLEDs and solar cells. Its role as a solvent in specialized industrial processes, particularly in the formulation of high-performance coatings and adhesives, is also noteworthy. Furthermore, it is employed in research laboratories as a reagent for organic synthesis, aiding in the creation of novel chemical structures for various scientific studies.