Used as a precursor in the production of tungsten-based materials, especially in catalysts for petroleum refining and chemical synthesis. Employed in electroplating and electroless deposition processes to apply tungsten or tungsten alloy coatings on metals, providing wear and corrosion resistance. Applied in water treatment as a corrosion inhibitor for mild steel, particularly in cooling systems. Utilized in research and industrial labs for synthesizing tungsten-containing compounds and as a source of tungstate ions in biochemical assays. Also used in the manufacturing of fire-retardant textiles and coatings due to tungsten’s thermal stability.