Ammonium pentaborate octahydrate is widely used in flame retardants due to its ability to release water and ammonia when heated, which helps suppress combustion. It is also employed in wood preservation treatments to protect against fungal decay and insect damage. In the ceramics industry, it acts as a flux to lower the melting point of materials, improving their workability and durability. Additionally, it serves as a corrosion inhibitor in cooling water systems, preventing the degradation of metal components. Its application extends to the production of specialty glasses, where it enhances thermal and chemical resistance. Furthermore, it is utilized in agriculture as a boron source in fertilizers to support essential plant growth and development.