Ammonium bromide is widely used in the photography industry as a component in photographic emulsions, where it helps in the formation of light-sensitive silver bromide. It is also employed in the manufacturing of fire retardants, providing flame resistance to materials such as textiles and wood. In the field of medicine, it serves as a sedative and anticonvulsant, particularly in the treatment of epilepsy. Additionally, it is utilized in the synthesis of organic compounds and as a catalyst in certain chemical reactions. Its properties make it suitable for use in corrosion inhibitors and as a reagent in analytical chemistry for identifying specific ions.