Tungstic acid is primarily used in the production of tungsten metal and its compounds. It serves as a precursor in the synthesis of tungsten oxides, which are essential in manufacturing tungsten carbide, a key material in cutting tools and wear-resistant parts. Additionally, it is employed in the creation of catalysts for various chemical reactions, particularly in petroleum refining and organic synthesis. Tungstic acid is also utilized in the textile industry as a mordant to fix dyes onto fabrics, ensuring colorfastness. In analytical chemistry, it acts as a reagent for the precipitation of proteins and alkaloids. Furthermore, it finds application in the production of fireproofing materials and phosphors for fluorescent lighting.