Description

Cerium Oxide is a versatile and high-performance rare earth compound, primarily valued for its exceptional polishing, catalytic, and UV-absorbing properties. Its unique chemical stability and redox behavior make it a critical material for advanced manufacturing and environmental technologies. This product is essential for industries including optics, automotive catalysis, glass manufacturing, and advanced ceramics.

Application

• Optical Polishing: A premier abrasive for precision polishing of glass, silicon wafers, and ophthalmic lenses, delivering scratch-free, high-clarity finishes.
• Automotive Catalysts: A key component in three-way catalytic converters, where it stores and releases oxygen to reduce harmful nitrogen oxide (NOx) emissions.
• Glass Manufacturing & Decolorization: Acts as a polishing agent for glass and, in its cerium(III) form, as a decolorizer to neutralize the green tint from iron impurities.
• UV Absorption & Sunscreens: Incorporated into coatings, plastics, and personal care products for its ability to absorb ultraviolet radiation.
• Solid Oxide Fuel Cells (SOFCs): Used as an electrolyte material due to its high ionic conductivity at elevated temperatures.
• Chemical Mechanical Planarization (CMP): A critical slurry component in semiconductor fabrication for planarizing dielectric and metal layers.
• Catalyst & Chemical Synthesis: Serves as a catalyst or catalyst support in organic synthesis, wastewater treatment, and combustion processes.
• Advanced Ceramics & Coatings: Imparts thermal stability, wear resistance, and corrosion protection to ceramic composites and thermal barrier coatings.

Basic Information

Product Name	Cerium Oxide
CAS No.	1345-13-7
Molecular Formula	CeO₂
Molecular Weight	172.11 g/mol
Synonyms	Cerium(IV) Oxide; Ceria; Ceric Oxide; Cerium Dioxide; Cerium Peroxide; Opaline; Rare Earth Oxide; Jewelers' Rouge; CeO₂
EINECS	215-150-4

Quality Control

Our Cerium Oxide is produced under a stringent quality management system. We offer various grades, including high-purity (99.9%-99.999%) for technical and research applications. Each batch is analyzed for critical parameters such as purity, particle size distribution, and specific surface area. Certificates of Analysis (COA) documenting these results are provided to ensure traceability and compliance with your specifications.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at room temperature (15-25°C). Keep away from incompatible materials such as strong reducing agents. Although stable under normal conditions, prolonged exposure to moist air may lead to caking.

Specification

Item	Specification
Appearance	White to pale yellow powder
Identification (XRD/IR)	Conforms to standard
Assay (as CeO₂)	≥ 99.9%
Particle Size (D50)	0.5 - 5.0 µm (customizable)
Specific Surface Area (BET)	20 - 100 m²/g
Loss on Drying (LOD)	≤ 1.0 %
Heavy Metals (as Pb)	≤ 10 ppm

Note: Specifications can be tailored. Please contact us for the detailed technical data sheet of a specific grade.