1,5-Naphthalenediamine is primarily used as an intermediate in the synthesis of dyes and pigments, particularly for producing high-performance azo dyes. These dyes are widely applied in the textile industry for coloring fabrics, offering excellent colorfastness and vibrant shades. Additionally, it serves as a key component in the production of polyimide resins, which are utilized in high-temperature-resistant coatings, adhesives, and electronic materials like flexible printed circuits. Its role in the synthesis of specialty chemicals also extends to the development of corrosion inhibitors and antioxidants, which are critical in industrial applications to protect metals and prolong the lifespan of materials. Furthermore, it finds use in research and development for creating advanced organic compounds with potential applications in pharmaceuticals and agrochemicals.