Used as a corrosion inhibitor in cooling water systems, protecting metal surfaces by forming a protective oxide layer. Commonly added to industrial water treatment formulations, often in combination with silicates or phosphates, to prevent rust and degradation in steel and copper alloys.

Employed in agriculture as a micronutrient source of molybdenum for crops, especially in soils deficient in this element, supporting nitrogen fixation in legumes.

Utilized in biochemical and microbiological research as a component in enzyme assays and bacterial growth media, particularly for studies involving nitrogenase or molybdoenzymes.

Serves in electroplating baths to improve coating adherence, finish quality, rust resistance, and surface hardness.

Additionally, used as an intermediate in the production of other molybdenum compounds for applications in catalysts, ceramics, and pigments.