Magnesium borate, also known as magnesium borate salts, is an general term for a group of compounds containing magnesium and boron. The chemical formula of magnesium borate can be varied, and one of the common forms is Mg3(BO3)2, which is a white or colorless crystal with good thermal stability.

Magnesium borate is an inorganic compound that has a variety of uses, especially in industry and materials science. Uses of magnesium borate include:

1. Refractory materials: Magnesium borate is widely used as a component of refractory materials due to its high melting point and good thermal stability, which is used in the manufacture of furnace linings, kilns and various high-temperature industrial equipment.

2. Glass and ceramic industry: Magnesium borate can be used as an additive for glass and ceramics to improve the thermal stability and mechanical strength of the product, while also improving its optical properties.

3. Catalysts and catalyst carriers: Magnesium borate can be used as a catalyst or catalyst carrier to promote reaction rate and improve selectivity in chemical reactions.

4. Heat stabilizer: In the plastics and rubber industry, magnesium borate can be used as a heat stabilizer to improve the heat resistance of products and prevent degradation.

5. Flame retardant: Magnesium borate can also be used as a flame retardant in materials such as plastics, rubber, and coatings to reduce flame propagation during combustion.

6. Magnetic Materials: Magnesium borate can be used to prepare certain types of magnetic materials for use in electronic and electrical equipment.

7. Agriculture: Magnesium borate may also be used as a trace element fertilizer to provide boron and magnesium needed for plant growth.