Used as a precursor in the production of tungsten-based catalysts for petroleum refining, particularly in hydrodesulfurization processes. Applied in the synthesis of tungsten oxide materials for gas sensors and electrochromic devices due to its high thermal stability and electrical conductivity. Employed in flame-retardant formulations for textiles and plastics, providing effective smoke suppression and fire resistance. Utilized in metal plating and coating processes to enhance wear and corrosion resistance. Also serves as a source of tungsten in the manufacture of advanced ceramics and electronic components.