Used in infrared spectroscopy as a transparent window material due to its wide transmission range in the IR region. Commonly employed in the preparation of solid samples by pressing with analytes to form pellets for analysis, particularly in FTIR techniques. Historically used as an anticonvulsant and sedative in veterinary medicine, particularly for managing epilepsy in dogs. Traditionally a key component in photographic emulsions and papers, reacting with silver nitrate to form light-sensitive silver bromide. Occasionally used in optical components and lenses for specialized instruments operating in the infrared spectrum.