Used in electroplating processes to provide a protective cadmium coating on metals, improving corrosion resistance and appearance. Commonly employed in the preparation of cadmium-based pigments and in the manufacturing of certain types of batteries, especially nickel-cadmium (NiCd) types. Serves as a source of cadmium ions in analytical chemistry for qualitative and quantitative analysis. Also utilized in specialized applications in electrochemistry, in the production of phosphors for cathode ray tubes and fluorescent lamps, and as a precursor in thin-film solar cells such as cadmium telluride (CdTe) types, which offer high efficiency in converting sunlight to electricity. In research and laboratory settings, it is used to study the environmental and biological impacts of heavy metals. Due to its high toxicity, handling requires strict safety and environmental controls to prevent contamination and health risks.