Used in research laboratories for studying alkali metal behavior due to its high reactivity and strong reducing properties. Commonly applied in spectroscopy experiments because of its distinct emission lines in the visible and near-infrared range. Employed in the development of specialized sensors and optoelectronic devices, particularly in atomic magnetometers and frequency standards. Also utilized in certain organic synthesis reactions where a powerful reducing agent is required. Handling requires strict inert atmosphere conditions due to rapid oxidation and potential ignition upon air exposure.