Samarium(III) chloride is used for the preparation of samarium metal, which has a variety of uses, notably in magnets. In laboratory Samarium(III) chloride can also be used as a starting point for the preparation of other samarium salts. It is used as infrares absorbing glass, lasers, color television phosphors, magnets, microwave filters. It is used as catalyst in cracking crude petroleum and used as an alloy with cobalt for magnets. It is used as neutron capture masers and have applications in nuclear industry.

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.