Lithium iodide is used as reagent in the cleavage of esters, ethers and epoxides, and carboxylation. It is used in scintillation counters. Lithium iodide is used as an electrolyte in high temperature batteries and artificial pacemakers. Phosphor, which is a complex of iodine, is used in neuron detection.

This Thermo Scientific Chemicals brand product was originally part of the Alfa Aesar product portfolio. Some documentation and label information may refer to the legacy brand. The original Alfa Aesar product / item code or SKU reference has not changed as a part of the brand transition to Thermo Scientific Chemicals.