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Dysprosium Oxide (chemical formulDy₂O₃, CAS No.: 1308-87-8, EINECS No.: 215-164-0) is a high-performance rare earth oxide renowned for its exceptional physical and chemical properties. As a white powder with a molecular weight of 373 and a density of 7.81g/cm³, this material boasts an impressive melting point of 2340°C, making it stand out in high-temperature applications. With purity levels ranging from 99% (2N) to 99.99% (4N), high-purity dysprosium oxide meets the stringent requirements of diverse industrial sectors. It is insoluble in water but soluble in acid and ethanol, and while it readily absorbs carbon dioxide in air (partially converting to dysprosium carbonate), proper storage in ventilated, dry warehouses ensures its stability. As a key member of the rare earth oxide family, dysprosium oxide is celebrated for its versatility, serving as a critical additive and raw material in cutting-edge technologies.
Our dysprosium oxide maintains strict purity standards, with Dy₂O₃/REO ratios as high as 99.99% for 4N grade. This ultra-high purity minimizes impurities such as Gd₂O₃, Tb₄O₇, and Fe₂O₃ (max 0.0005% for 4N grade), ensuring consistent performance in sensitive applications. The material’s high stability—even at extreme temperatures—makes it a reliable choice for long-term use in harsh environments, outperforming many conventional oxides.
With a high melting point and dense structure, dysprosium oxide offers excellent thermal resistance, making it ideal for high-temperature processes. Its cathode emission capability is a unique advantage, enabling enhanced performance in electronic components. Additionally, its compatibility with acids and ethanol expands its usability in various chemical and manufacturing processes.
Each batch of high-purity dysprosium oxide undergoes rigorous testing to meet TREO (Total Rare Earth Oxide) minimums of 99% across all grades. Non-rare earth impurities like SiO₂, CaO, and Al₂O₃ are strictly controlled, ensuring the material adheres to international industry standards. This commitment to quality makes our dysprosium oxide a trusted choice for critical applications.
Material name | Dysprosium oxide |
Formula | Dy2O3 |
CAS No. | 1308-87-8 |
EINECS NO. | 215-164-0 |
Molecular Weight | 373 |
Density | 7.81g/cm3 |
Melting point | 2340°C |
Appearance | White powder |
Purity/Specification (Dy2O3/REO) | 99%-99.99% |
Solubility | Insoluble in water, soluble in acid and ethanol. Exposed to air, carbon dioxide is readily absorbed and partially converted into dysprosium carbonate. |
Dysprosium Oxide Dy2O3 | ||||||
Purity | 2N | 2N5 | 3N | 3N5 | 4N | |
TREO%min. | 99 | 99 | 99 | 99 | 99 | |
Dy203/TREO%min. | 99 | 99.5 | 99.9 | 99.95 | 99.99 | |
Rare earth impurities | Gd₂O3 | Subtotal | Subtotal | Subtotal | Subtotal | 0.001 |
Tb₄O7 | 0.003 | |||||
HozO3 | 0.002 | |||||
Er2O₃ | 0.001 | |||||
Y2O3 | 0.002 | |||||
Other RE | Subtotal | |||||
Non rare earth impurities | Fe²03 | 0.005 | 0.003 | 0.002 | 0.001 | 0.0005 |
SiO₂ | 0.02 | 0.01 | 0.01 | 0.005 | 0.005 | |
CaO | 0.03 | 0.02 | 0.01 | 0.005 | 0.005 | |
Al²O3 | 0.05 | 0.04 | 0.3 | 0.02 | 0.01 | |
CF | 0.05 | 0.04 | 0.02 | 0.02 | 0.01 | |
LOJ%Max. | 1 | 1 | 1 | 1 | 1 | |
Dysprosium oxide is widely used as a control material in nuclear reactors due to its ability to absorb neutrons effectively. Its high stability under radiation and extreme temperatures ensures safe and reliable operation of nuclear facilities, making it an indispensable component in the energy sector.
As a raw material for manufacturing high-brightness dysprosium lamps, this oxide delivers excellent light color and energy efficiency, ideal for commercial and industrial lighting. Its cathode emission properties also make it a valuable anode coating in electronic devices, enhancing conductivity and extending component lifespan.
In the production of NdFeB permanent magnets, dysprosium oxide acts as a key additive, improving magnet coercivity and thermal stability—critical for applications in electric vehicles, wind turbines, and consumer electronics. It is also used in magneto-optical memory materials and as an additive in yttrium iron/yttrium aluminum garnets, supporting advanced optical and magnetic technologies.
As a primary raw material for metal dysprosium production, dysprosium oxide enables the manufacturing of high-performance rare earth metals used in specialized alloys. In the glass industry, it enhances optical properties, producing glass with improved clarity and resistance to thermal shock, suitable for precision optical instruments.
Dysprosium oxide should be stored in a ventilated, dry warehouse to avoid moisture and exposure to air (which causes carbon dioxide absorption and partial conversion to dysprosium carbonate). Ensure packaging is intact during storage and transportation to prevent contamination.
We offer five purity grades: 2N (99%), 2N5 (99.5%), 3N (99.9%), 3N5 (99.95%), and 4N (99.99%). Each grade meets strict impurity control standards, with 4N grade featuring the lowest levels of rare earth and non-rare earth impurities.
Dysprosium oxide is insoluble in water but soluble in acid and ethanol. This solubility profile makes it suitable for chemical processing and alloy production, where dissolution in specific solvents is required.
Dysprosium Oxide (chemical formulDy₂O₃, CAS No.: 1308-87-8, EINECS No.: 215-164-0) is a high-performance rare earth oxide renowned for its exceptional physical and chemical properties. As a white powder with a molecular weight of 373 and a density of 7.81g/cm³, this material boasts an impressive melting point of 2340°C, making it stand out in high-temperature applications. With purity levels ranging from 99% (2N) to 99.99% (4N), high-purity dysprosium oxide meets the stringent requirements of diverse industrial sectors. It is insoluble in water but soluble in acid and ethanol, and while it readily absorbs carbon dioxide in air (partially converting to dysprosium carbonate), proper storage in ventilated, dry warehouses ensures its stability. As a key member of the rare earth oxide family, dysprosium oxide is celebrated for its versatility, serving as a critical additive and raw material in cutting-edge technologies.
Our dysprosium oxide maintains strict purity standards, with Dy₂O₃/REO ratios as high as 99.99% for 4N grade. This ultra-high purity minimizes impurities such as Gd₂O₃, Tb₄O₇, and Fe₂O₃ (max 0.0005% for 4N grade), ensuring consistent performance in sensitive applications. The material’s high stability—even at extreme temperatures—makes it a reliable choice for long-term use in harsh environments, outperforming many conventional oxides.
With a high melting point and dense structure, dysprosium oxide offers excellent thermal resistance, making it ideal for high-temperature processes. Its cathode emission capability is a unique advantage, enabling enhanced performance in electronic components. Additionally, its compatibility with acids and ethanol expands its usability in various chemical and manufacturing processes.
Each batch of high-purity dysprosium oxide undergoes rigorous testing to meet TREO (Total Rare Earth Oxide) minimums of 99% across all grades. Non-rare earth impurities like SiO₂, CaO, and Al₂O₃ are strictly controlled, ensuring the material adheres to international industry standards. This commitment to quality makes our dysprosium oxide a trusted choice for critical applications.
Material name | Dysprosium oxide |
Formula | Dy2O3 |
CAS No. | 1308-87-8 |
EINECS NO. | 215-164-0 |
Molecular Weight | 373 |
Density | 7.81g/cm3 |
Melting point | 2340°C |
Appearance | White powder |
Purity/Specification (Dy2O3/REO) | 99%-99.99% |
Solubility | Insoluble in water, soluble in acid and ethanol. Exposed to air, carbon dioxide is readily absorbed and partially converted into dysprosium carbonate. |
Dysprosium Oxide Dy2O3 | ||||||
Purity | 2N | 2N5 | 3N | 3N5 | 4N | |
TREO%min. | 99 | 99 | 99 | 99 | 99 | |
Dy203/TREO%min. | 99 | 99.5 | 99.9 | 99.95 | 99.99 | |
Rare earth impurities | Gd₂O3 | Subtotal | Subtotal | Subtotal | Subtotal | 0.001 |
Tb₄O7 | 0.003 | |||||
HozO3 | 0.002 | |||||
Er2O₃ | 0.001 | |||||
Y2O3 | 0.002 | |||||
Other RE | Subtotal | |||||
Non rare earth impurities | Fe²03 | 0.005 | 0.003 | 0.002 | 0.001 | 0.0005 |
SiO₂ | 0.02 | 0.01 | 0.01 | 0.005 | 0.005 | |
CaO | 0.03 | 0.02 | 0.01 | 0.005 | 0.005 | |
Al²O3 | 0.05 | 0.04 | 0.3 | 0.02 | 0.01 | |
CF | 0.05 | 0.04 | 0.02 | 0.02 | 0.01 | |
LOJ%Max. | 1 | 1 | 1 | 1 | 1 | |
Dysprosium oxide is widely used as a control material in nuclear reactors due to its ability to absorb neutrons effectively. Its high stability under radiation and extreme temperatures ensures safe and reliable operation of nuclear facilities, making it an indispensable component in the energy sector.
As a raw material for manufacturing high-brightness dysprosium lamps, this oxide delivers excellent light color and energy efficiency, ideal for commercial and industrial lighting. Its cathode emission properties also make it a valuable anode coating in electronic devices, enhancing conductivity and extending component lifespan.
In the production of NdFeB permanent magnets, dysprosium oxide acts as a key additive, improving magnet coercivity and thermal stability—critical for applications in electric vehicles, wind turbines, and consumer electronics. It is also used in magneto-optical memory materials and as an additive in yttrium iron/yttrium aluminum garnets, supporting advanced optical and magnetic technologies.
As a primary raw material for metal dysprosium production, dysprosium oxide enables the manufacturing of high-performance rare earth metals used in specialized alloys. In the glass industry, it enhances optical properties, producing glass with improved clarity and resistance to thermal shock, suitable for precision optical instruments.
Dysprosium oxide should be stored in a ventilated, dry warehouse to avoid moisture and exposure to air (which causes carbon dioxide absorption and partial conversion to dysprosium carbonate). Ensure packaging is intact during storage and transportation to prevent contamination.
We offer five purity grades: 2N (99%), 2N5 (99.5%), 3N (99.9%), 3N5 (99.95%), and 4N (99.99%). Each grade meets strict impurity control standards, with 4N grade featuring the lowest levels of rare earth and non-rare earth impurities.
Dysprosium oxide is insoluble in water but soluble in acid and ethanol. This solubility profile makes it suitable for chemical processing and alloy production, where dissolution in specific solvents is required.
