Used as a precursor in the synthesis of cadmium-based nanomaterials, particularly cadmium sulfide and cadmium selenide quantum dots, which are applied in optoelectronic devices and solar cells. Employed in electroplating baths to deposit cadmium coatings for corrosion resistance in aerospace and automotive components. Serves as a catalyst or reagent in organic synthesis and in the preparation of other cadmium compounds for industrial use. Also utilized in analytical chemistry for qualitative and quantitative detection of certain anions. Due to environmental and toxicity concerns, its use is increasingly regulated and often replaced where possible.