Samarium oxide
Properties
Chemical formula: Sm₂O₃
Name: Samarium(III) oxide / samarium oxide
CAS No.: 12060-58-1
Molar mass: 348.72 g/mol
Density: 8.34 g/cm³
Melting point: approx. 2335 °C
Color: slightly yellowish-white
Form: fine powder
Solubility: insoluble in water, soluble in inorganic acids
Samarium oxide (Sm₂O₃), also known as samarium(III) oxide, is an inorganic compound belonging to the group of rare-earth oxides. It is typically supplied as a fine, slightly yellowish-white powder and is characterized by very high thermal stability.
Samarium oxide is insoluble in water but dissolves readily in inorganic acids, forming the corresponding samarium(III) salts. The material can also absorb moisture and carbon dioxide from the air, making suitable storage conditions important for maintaining product quality.
Sm³⁺ ions exhibit characteristic optical properties, including pronounced infrared absorption. Samarium also has a high thermal-neutron capture cross-section of approximately 5900 barns, making its compounds relevant for nuclear technology and specialized functional materials.
Samarium oxide is an important precursor for the production of samarium metal. Samarium metal is particularly important for SmCo permanent magnets, which combine high coercivity, excellent temperature stability and strong resistance to demagnetization.
The element samarium is used both as samarium metal and in the form of specialized compounds. Samarium and its compounds are relevant for permanent magnets, nuclear technology, specialty glass, optics, catalysis and electronics. Sm₂O₃ is commonly produced by calcining samarium oxalate, hydroxide or carbonate at temperatures above 800 °C.
Would you like to buy samarium oxide? Auremo offers samarium oxide, samarium metal and other rare metals. The samarium price, samarium metal price and samarium price per kg primarily refer to metallic samarium, while the price of samarium oxide depends on purity, particle size, order quantity and delivery conditions.
Advantages
• Important precursor for samarium metal and SmCo magnets
• Supports high resistance to demagnetization in magnetic materials
• Pronounced infrared absorption
• High thermal-neutron capture capability of samarium
• Very high thermal stability
• Stability at temperatures above 2300 °C
• Suitable for specialty glass and optical materials
• Suitable for catalytic and electronic applications
Applications
• Production of samarium metal
• SmCo permanent magnets
• High-temperature magnetic systems
• Aerospace engineering
• Automotive applications
• Nuclear technology
• Neutron-absorbing and control materials
• Specialty optical glass
• Infrared-absorbing and protective glass
• Catalysis of alcohol dehydrogenation and dehydration
• Microwave dielectrics
• Electronics and functional materials
Auremo offers a wide range of samarium, samarium oxide and other rare metals at competitive prices. If you have any questions about Sm₂O₃, samarium metal, available purity grades, particle sizes or delivery conditions, please contact us directly.
