Ammonium hypophosphite is widely used as a flame retardant in various materials, including textiles, plastics, and paper. It works by promoting the formation of a char layer that insulates the material and prevents the spread of flames. In the electronics industry, it serves as a reducing agent in electroless nickel plating, helping to deposit a uniform and corrosion-resistant nickel coating on metal surfaces. Additionally, it is utilized in agriculture as a source of phosphorus for fertilizers, aiding in plant growth and development. Its applications also extend to water treatment, where it acts as a corrosion inhibitor, protecting metal pipelines and equipment from degradation.