Lanthanum chloride solutions are used in various water treatment applications. It is also used in biochemical research. Doped with cerium, it is applied as a scintillator material. In organic synthesis, lanthanum trichloride functions as a mild lewis acid. This compound is used in gamma detectors.

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.