Gold(III) hydroxide is primarily utilized in the field of materials science, particularly in the synthesis of gold nanoparticles. These nanoparticles have significant applications in catalysis, where they enhance the efficiency of chemical reactions, including oxidation processes. Additionally, it is used in the preparation of gold-based compounds for electronics, aiding in the creation of conductive inks and coatings for circuit boards. In medicine, it serves as a precursor for developing gold-based drugs, which are explored for their potential anti-inflammatory and anti-cancer properties. Its role in nanotechnology also extends to biosensors, where it helps in detecting biological molecules with high sensitivity.