Used as a precursor in the production of molybdenum-based catalysts for petroleum refining, especially in hydrodesulfurization processes. Employed in corrosion inhibitors for metal surfaces in industrial water systems. Applied in the manufacture of pigments and flame retardants for plastics and coatings. Utilized in analytical chemistry as a reagent for phosphate detection in water and soil samples. Also serves as a molybdenum source in fertilizers for correcting molybdenum deficiency in crops.