This chemical is primarily used as a sensitive reagent in the determination of selenium (Se) through gas chromatography with electron capture detection (GC-ECD). It plays a crucial role in analytical chemistry, particularly in environmental and biological sample analysis, where precise detection of selenium levels is essential. The reagent forms a stable complex with selenium, enabling accurate quantification even at trace concentrations. Its application is vital in monitoring selenium contamination in water, soil, and food products, as well as in assessing selenium’s role in biological processes. The high sensitivity and specificity of this reagent make it a valuable tool in research and quality control laboratories.