Used as a precursor in the production of semiconductor materials, especially in the manufacturing of antimony-based compounds for infrared detectors and thermoelectric devices. Commonly applied in doping silicon wafers to create p-type semiconductors in the electronics industry. Also utilized in flame retardant formulations, where it works synergistically with halogenated compounds to enhance fire resistance in plastics, textiles, and coatings. Employed in the synthesis of catalysts for polyethylene terephthalate (PET) production. Additionally, finds use in some specialized analytical chemistry procedures as a reagent for detecting specific metal ions.