Dysprosium oxide
Properties
Chemical formula: Dy₂O₃
Name: Dysprosium(III) oxide / dysprosium oxide
CAS No.: 1308-87-8
Molar mass: 373.00 g/mol
Density: 7.81 g/cm³
Melting point: 2408 °C
Color: slightly pastel yellow to white
Form: fine powder
Solubility: insoluble in water and organic solvents, soluble in mineral acids
Dysprosium oxide (Dy₂O₃), also known as dysprosium(III) oxide, is an inorganic compound belonging to the group of rare-earth oxides. The material is typically supplied as a fine, slightly pastel-yellow to white powder and is characterized by very high thermal stability.
With a melting point of approximately 2408 °C, dysprosium oxide remains stable under extreme thermal conditions. It is insoluble in water and organic solvents but dissolves readily in mineral acids, forming the corresponding dysprosium(III) salts.
Due to the high magnetic moment of Dy³⁺ ions, the compound exhibits strong paramagnetic properties. The element dysprosium also has a high thermal-neutron capture cross-section, making its compounds relevant for nuclear technology. Dysprosium oxide is commonly produced by calcining dysprosium oxalate or dysprosium hydroxide at elevated temperatures.
Dysprosium metal and its compounds are used in advanced magnetic materials, nuclear technology, optical systems, lasers and high-performance ceramics. Dysprosium oxide is particularly important as an additive in NdFeB permanent magnets, where it can improve magnetic stability at elevated temperatures.
Would you like to buy dysprosium oxide? Auremo offers dysprosium oxide, dysprosium metal and other rare metals for technical applications. The dysprosium price, dysprosium metal price and dysprosium price per kg primarily refer to metallic dysprosium, while the price of dysprosium oxide or Dy oxide depends on purity, particle size, quantity and delivery conditions.
Advantages
• Extremely high temperature resistance
• Chemical stability at temperatures above 2400 °C
• Strong paramagnetic properties
• Helps stabilize magnetic performance at elevated temperatures
• Effective thermal-neutron absorption
• Suitable for precise doping of optical materials
• High-purity grades for demanding technical applications
• Suitable for advanced ceramics and specialty materials
Applications
• NdFeB permanent magnets
• Temperature stabilization of magnets for electric motors
• Nuclear technology
• Control rods and neutron-absorbing materials
• Optics and laser technology
• Specialty glass, laser crystals and optical fibers
• High-performance ceramics
• Thermally stable specialty materials
• Production of dysprosium compounds
• Materials science and research
• Laboratory applications
• Research and development
Auremo offers a wide range of rare metals and technical materials at competitive prices. If you have any questions about dysprosium oxide, dysprosium metal, available purity grades, particle sizes or delivery conditions, please contact us directly. We will be happy to prepare an individual quotation for you.
