Used primarily in gold plating and electroplating processes, where it serves as a source of gold ions for depositing thin, conductive gold layers onto electronic components and connectors. It is also employed in the synthesis of gold nanoparticles for applications in catalysis, sensors, and biomedical fields. In research, it acts as a precursor for preparing other gold-containing compounds and materials. Its role in homogeneous catalysis enables certain organic transformations, particularly in specialty chemical and pharmaceutical manufacturing.