2-Nitronaphthalene is primarily used as an intermediate in the synthesis of dyes and pigments, contributing to the production of vibrant and stable colors for textiles and other materials. It also serves as a precursor in the manufacture of certain pharmaceuticals, where it plays a role in creating active compounds for medical applications. Additionally, it is utilized in research and development for studying chemical reactions and mechanisms, particularly in organic chemistry. Its properties make it valuable in industrial processes where nitration and aromatic compound transformations are required.