Global Supplier & Worldwide Shipping
Ruisen supplies the following rare earth oxide powders globally on a wholesale basis:
LREE: La₂O₃, CeO₂, Pr₆O₁₁, Nd₂O₃, Sm₂O₃, Eu₂O₃, Pr-Nd Oxide
HREE: Y₂O₃, Gd₂O₃, Tb₄O₇, Dy₂O₃, Ho₂O₃, Er₂O₃, Tm₂O₃, Yb₂O₃, Lu₂O₃
Here, you can order the relevant rare earth oxides based on the needs of your industry application. In addition to standard specifications, we can also provide customized services according to your requirements.
We are proud to tell you that with us, you will receive the most competitive prices and the highest quality rare earth oxides, along with the best one-stop ordering service.
Light Rare Earth Oxides Powder
LREE: Lanthanum (La) to Europium (Eu), atomic numbers 57–63.
Have lower atomic numbers, relatively higher crustal abundance, and are widely used in metallurgy, catalysts, and glass polishing. For example, cerium oxide (CeO₂) is a key component in automotive exhaust catalysts, while neodymium oxide (Nd₂O₃) is critical for permanent magnets.
Light rare earth oxide powders, characterized by lower atomic numbers, are widely used in industry.
Lanthanum Oxide (La₂O₃)
CAS: 1312-81-8 | Purity: 99.5%-99.99%
Properties: White hygroscopic powder, soluble in acids.
Key Applications:
▶ Optical glass (refractive index enhancement)
▶ Petroleum cracking catalysts
▶ Thermionic emission materials (electron microscopy)
Cerium Oxide (CeO₂)
CAS: 1306-38-3 | Purity: 99.9%-99.999%
Properties: Light yellow polishing powder, reversible redox properties.
Key Applications:
▶ Automotive exhaust catalytic converters (oxygen storage)
▶ Glass decolorizer & UV absorber
▶ CMP slurries (semiconductor wafers)
Praseodymium Oxide (Pr₆O₁₁)
CAS: 12036-75-6 | Purity: 99.5%-99.99%
Properties: Black powder, strong oxidizability.
Key Applications:
▶ Fiber optic amplifier dopants
▶ High-temperature ceramic colorants (emerald green)
▶ NiMH battery anode materials
Neodymium Oxide (Nd₂O₃)
CAS: 1313-97-9 | Purity: 99.5%-99.999%
Properties: Lavender powder, critical for magnetic alloys.
Key Applications:
▶ Permanent magnet motors/generators
▶ MRI equipment components
▶ Laser crystal doping (Nd:YAG)
Praseodymium-Neodymium Oxide
Properties: Brownish powder, core raw material for permanent magnets.
Key Applications:
▶ NdFeB magnets (high energy density)
▶ Green ceramic pigments (praseodymium yellow)
▶ Metal alloy additives
Samarium Oxide (Sm₂O₃)
CAS: 12060-58-1 | Purity: 99.5%-99.99%
Properties: Pale yellow powder, neutron absorption capability.
Key Applications:
▶ Nuclear reactor control rods
▶ Samarium-cobalt magnets
▶ X-ray laser crystal dopants
Europium Oxide (Eu₂O₃)
CAS: 1308-96-9 | Purity: 99.9%-99.999%
Properties: Pink-tinged fluorescent powder.
Key Applications:
▶ LED/phosphor lamp red emission layers
▶ Banknote anti-counterfeiting inks (UV-activated)
▶ Neutron shielding materials
Heavy Rare Earth Oxides Powder
HREE: Gadolinium (Gd) to Lutetium (Lu) (atomic numbers 64–71), plus Yttrium (Y, atomic number 39), Yttrium is grouped with HREE due to its chemical similarity to heavy rare earths.
Have higher atomic numbers, lower crustal abundance, and are harder to isolate, but they exhibit unique optical and magnetic properties. Dysprosium oxide (Dy₂O₃) enhances high-temperature magnets, erbium oxide (Er₂O₃) is vital for fiber-optic amplifiers, and yttrium oxide (Y₂O₃) is used in phosphors and ceramics.
Heavy rare earth oxide powders, characterized by their rarity and unique functions in high-tech industries, are highly valued.
Gadolinium Oxide (Gd₂O₃)
CAS: 12064-62-9 | Purity: 99% - 99.999%
Properties: White powder, insoluble in water, soluble in acid, slightly magnetic, hygroscopic. High melting point (2330-2420 °C).
Key Applications:
▶ MRI contrast agents
▶ Nuclear reactor neutron absorber materials
▶ Phosphors for displays and lamps
▶ Additives in ceramics and special glasses
▶ High-temperature alloys
▶ Lasers and optical applications
Terbium Oxide (Tb₄O₇)
CAS: 12037-01-3 | Purity: 99% - 99.999%
Properties: Dark brown to black powder, insoluble in water, soluble in acid, hygroscopic, high thermal and chemical stability. Exhibits semiconducting and luminescent properties.
Key Applications:
▶ Phosphors for displays and lamps
▶ Additive in nuclear fuel
▶ Optical glass and films
▶ Ceramics
▶ Electronic materials
▶ Magneto-optical storage
▶ Additive in yttrium aluminium garnet and yttrium iron garnet
Dysprosium Oxide (Dy₂O₃)
CAS: 1308-87-8 | Purity: 99% - 99.999%
Properties: White to yellowish powder, insoluble in water, soluble in acids, hygroscopic. Possesses excellent magnetic properties.
Key Applications:
▶ Additive in magneto-optical recording media
▶ Special ceramics and glasses
▶ Phosphors
▶ Additive in nuclear reactor control rods
▶ Dysprosium metal production
▶ Catalysts
Holmium Oxide (Ho₂O₃)
CAS: 12055-62-8 | Purity: 99% - 99.999%
Properties: Pale yellowish powder, insoluble in water, soluble in strong acids. Exhibits unique magnetic and optical properties.
Key Applications:
▶ Specialty glass for calibration of spectrophotometers
▶ Lasers
▶ Control rods in nuclear reactors
▶ Phosphors
▶ Ceramics
▶ Additive in metal alloys
Erbium Oxide (Er₂O₃)
CAS: 1312-63-6 | Purity: 99% - 99.999%
Properties: Pink powder, insoluble in water, soluble in strong acids. Exhibits characteristic pink color and unique optical properties.
Key Applications:
▶ Colorant for glass and ceramics
▶ Optical fibers and amplifiers
▶ Lasers
▶ Nuclear reactor control materials
▶ Phosphors
▶ Infrared absorbing glass
Thulium Oxide (Tm₂O₃)
CAS: 12036-44-1 | Purity: 99% - 99.999%
Properties: White to pale green powder, insoluble in water, soluble in strong acids. Thermally stable with unique luminescent and magnetic properties.
Key Applications:
▶ Lasers (especially fiber lasers for medical and industrial use)
▶ Specialty glass and ceramics (coloring and properties enhancement)
▶ Phosphors (X-ray phosphors, UV-emitting materials)
▶ Nuclear applications (neutron absorption)
▶ Catalysis
▶ Biomedical applications
Ytterbium Oxide (Yb₂O₃)
CAS: 1314-37-0 | Purity: 99% - 99.999%
Properties: White powder, insoluble in water, soluble in strong acids. Exhibits high density and unique optical and electronic properties.
Key Applications:
▶ Fiber optic communication (dopant in optical fibers)
▶ Lasers (high-power solid-state lasers)
▶ Ceramics and glass (thermal barrier coatings, infrared filters)
▶ Phosphors (displays, security inks)
▶ Catalysis
▶ Nuclear applications
Lutetium Oxide (Lu₂O₃)
CAS: 12030-75-0 | Purity: 99% - 99.999%
Properties: White powder, insoluble in water, soluble in strong acids. Exhibits high density, high melting point, and unique scintillation properties.
Key Applications:
▶ Scintillation detectors (medical imaging - PET scanners)
▶ High-refractive-index glass
▶ Ceramics (high-temperature applications)
▶ Phosphors
▶ Lasers
▶ Catalysis
Yttrium Oxide (Y₂O₃)
CAS: 1314-36-9 | Purity: 99% - 99.999%
Properties: White to off-white powder, insoluble in water, soluble in dilute acids. High melting point, good thermal conductivity, and excellent chemical stability.
Key Applications:
▶ Phosphors (TV and display screens - especially red)
▶ Ceramics (high-temperature materials, thermal shock resistance)
▶ Lasers (solid-state lasers)
▶ High-temperature superconductors
▶ Specialty glass
▶ Catalysis
▶ Coatings (thermal barrier coatings)
News & Blog
Follow Our News here for the latest industry information.
Rosneft acquires Siberia’s largest rare earth deposit
Russian state business registration documents show that Rosnef PJC has recently acquired the giant Tomtor rare earth deposit in Siberia, which is considered the largest of its kind in Russia.
Canada’s Neo exits rare earth separation facility in China
Canadian Neo Performance Materials announced on May 22 that it has exited its rare earth separation facility in China. The exit is the conclusion of a strategic review it launched last year.
South Africa launches critical mineral strategy, new mining law open for public comments
South African Minister of Mineral Resources and Energy Gwede Mantashe recently announced that the “Critical Minerals and Metals Strategy” has been formally approved, and the draft Mineral Resources Development Bill 2025 has been released for public comments.
EU must allocate more than 10 billion euros for critical minerals
The EU needs to set up more than 10 billion euros ($11.4 billion) to stimulate investment in the exploration, mining and recycling of critical raw materials, the head of the EU-funded critical minerals agency said on May 14.
Follow Our Blogs to learn more about rare earth elements.
What is Rare Earth? And Why Should You Care?
You’ve heard the words “rare earth.” Perhaps you saw them in the news. They seem … well, unusual. And possibly a little mystical.