- Lithium chloride is mainly used for the production of lithium metal by electrolysis of a LiCl/KCl melt at 450 °C (842 °F). LiCl is also used as a brazing flux for aluminium in automobile parts.
- It is used as a desiccant for drying air streams. In more specialized applications, lithium chloride finds some use in organic synthesis, e.g., as an additive in the Stille reaction.
- Also, in biochemical applications, it can be used to precipitate RNA from cellular extracts.
- Lithium chloride is also used as a flame colorant to produce dark red flames.
- Lithium chloride is used as a relative humidity standard in the calibration of hygrometers.
- Molten LiCl is used for the preparation of carbon nanotubes, graphene and lithium niobate.
- Lithium Chloride is a medicine that is used for the treatment of Immunomodulator and other conditions.
- Lithium salts affect the central nervous system in a variety of ways. While the citrate, carbonate, and orotate salts are currently used to treat bipolar disorder, other lithium salts including the chloride were used in the past. For a short time in the 1940s lithium chloride was manufactured as a salt substitute, but this was prohibited after the toxic effects of the compound were recognized.
Source: Wikipedia, https://en.wikipedia.org/wiki/Lithium_chloride#Uses