Lanthanum sulfate is a chemical compound with the formula La₂(SO₄)₃. It is a white crystalline solid that is sparingly soluble in water. Lanthanum sulfate is composed of lanthanum cations and sulfate anions. It belongs to the family of lanthanide sulfates.

Lanthanum sulfate has several important uses:

Catalysis: It can be used as a catalyst or catalyst support in various chemical reactions. For example, in some organic synthesis reactions, it helps to increase the reaction rate and selectivity.

Ceramics and Glass Industry: It is added to ceramics and glass materials to improve their properties. It can enhance the mechanical strength, thermal stability, and optical properties of these materials. For instance, in glass production, it can be used to adjust the refractive index and improve the clarity of the glass.

Medical Applications: In some medical research and applications, lanthanum sulfate may be used in certain diagnostic and therapeutic techniques. For example, it can be used as a contrast agent in some imaging methods due to the unique properties of lanthanum.

Water Treatment: It can be employed in water treatment processes. Lanthanum sulfate can react with phosphate ions in water, helping to remove phosphates from wastewater. This is important for preventing water eutrophication.