Used primarily as a desiccant and absorbent in absorption refrigeration systems, especially in large-scale air conditioning and industrial cooling units. Its high affinity for water makes it effective in removing moisture from air and gases. Also utilized in the pharmaceutical industry as a reagent in organic synthesis and as a sedative in some medical applications, though this use has declined over time. Plays a role in the preparation of other lithium-based chemicals and in certain types of batteries and electrochemical research.