Lithium azide solution is primarily used in organic synthesis as a reagent for the introduction of azide groups into molecules. It is particularly valuable in the preparation of azido compounds, which are intermediates in the synthesis of various pharmaceuticals, agrochemicals, and polymers. The solution is also employed in click chemistry reactions, where it facilitates the formation of triazole compounds through cycloaddition reactions with alkynes. Additionally, lithium azide solution finds application in the preparation of energetic materials and explosives due to the high nitrogen content of azides. In research, it is utilized for the modification of biomolecules and the development of new materials with specific functionalities.