Vanadium sulfate (VOSO₄) is an important inorganic compound with a variety of uses and preparation methods. It is mainly used as a mordant, catalytic reducing agent, and a colorant for ceramics and glass. Vanadium sulfate can form a variety of hydrates, of which pentahydrate is the most common. This hygroscopic blue solid is one of the most common sources of vanadium in laboratories and is known for its high stability.

1. Catalyst: Vanadium sulfate is an effective catalyst used in a variety of chemical reactions, including hydrogenation and dehydrogenation in petrochemical industry, and oxidation and reduction reactions in organic synthesis.

2. Battery material: It is also used as a key ingredient in certain types of batteries, such as vanadium batteries, which are valued for their high energy density and long life.

3. Colorants: In ceramic and glass manufacturing, vanadium sulfate is used as a colorant that can produce unique color effects.

4. Mordant: In the textile industry, vanadium sulfate can be used as a mordant to help fix the dye and improve color adhesion.

5. Metallurgical industry: Vanadium sulfate is used in metallurgical processes, such as extracting and refining metals, and as a component of alloys.

6. Pigments and coatings: It is also used as an ingredient in certain pigments, providing color and hiding power.

7. Agriculture: Vanadium sulfate also has applications in agriculture, although it is not as common as in other fields, and it may be used in specific fertilizer formulations or as a regulator of plant growth.

8. Environmental protection: In the field of environmental protection, vanadium sulfate may be used in the remediation process of polluted soil and water bodies.