CAS #： 7439-19-9; Molecular Weight 150.360; Melting Point 1074 °C(lit.); Boiling Point 1794 °C(lit.); Density 7.47 g/cm³ (r.t.).

Metallic samarium can combine with non-metal elements like oxygen, nitrogen, and sulfur to form various compounds. When it reacts with oxygen, it produces samarium oxide (Sm2O), a significant rare earth oxide widely used in ceramics, catalysts, and optical glass. Samarium also reacts with nitrogen to create samarium nitride (SmN), known for its strong magnetic and conductive properties, making it useful in magnetic materials and electronic devices. Additionally, samarium can react with sulfur compounds, such as hydrogen sulfide, to form samarium sulfide (Sm2S3), which is crucial in certain optoelectronic and optical devices.

Magnetic Materials: Samarium forms rare earth magnetic alloys with metals like iron, cobalt, and nickel, offering excellent magnetic properties. These alloys are widely used in electromagnetic devices such as motors, generators, and solenoid valves.

Optical Glass: Samarium oxide (Sm2O3) has important applications in optical glass. With its excellent transparency and optical properties, it is used to produce various optical components, such as lenses, prisms, and optical filters.