Erbium(III) oxide
Erbium(III) oxide (CAS: 12061-16-4), with the chemical formula Er2O3 and a molecular weight of 382.52 g/mol, is a highly stable, pink-hued powder. This rare earth oxide finds application as a dopant in glass and phosphors, contributing to specific optical and lasing properties. It is also utilised in catalysis and as a component in advanced materials science and ceramic applications.

Dopant in Optical Materials
Erbium(III) oxide is employed as a dopant in glass fibers for telecommunications, enabling signal amplification in optical amplifiers. Its unique luminescent properties also make it valuable in phosphors for lighting and display technologies.
Catalysis
As a component in catalytic systems, Erbium(III) oxide can influence reaction pathways and efficiencies in various chemical syntheses. Its lanthanide nature offers distinct Lewis acidity for certain catalytic applications.
Materials Science and Ceramics
This oxide serves as a precursor or additive in the development of advanced ceramic materials and alloys. It can impart specific thermal, electrical, or magnetic properties to the final composite.
Chemical Synthesis
Erbium(III) oxide is used as a reagent or intermediate in the synthesis of other erbium-containing compounds and organometallic complexes.
| Molecular weight | 382.52 |
|---|---|
| Linear formula | Er2O3 |
| Assay | 99.8% |
| Form | powder |
| Density | 8.64 g/mL at 25 °C(lit.) |
| Protective equipment | dust mask type N95 (US), Eyeshields, Gloves |
|---|---|
| Water hazard class (WGK, DE) | 2 |
Hazard information is provided for guidance. Always consult the product Safety Data Sheet (SDS), available on request, before handling.
Documentation
Every batch ships with a Certificate of Analysis covering assay, identity and purity; the grade is confirmed against your enquiry. Safety Data Sheets and technical data sheets are available on request.
Supply & logistics
Samples for technical evaluation; bulk MOQ by grade and packaging. In-stock material ships in 7–10 working days, worldwide, with full export documentation.
What is Erbium(III) oxide used for?
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Erbium(III) oxide is primarily used as a dopant in optical materials like glass and phosphors, in catalysis, and in materials science for advanced ceramics and alloys.
What is the CAS number and formula for Erbium(III) oxide?
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The CAS number for Erbium(III) oxide is 12061-16-4, and its chemical formula is Er2O3.
What grade and purity does Tech Serve Solutions supply for Erbium(III) oxide?
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Tech Serve Solutions supplies Erbium(III) oxide with an assay of 99.8%. We do not represent this product as USP, BP, or EP grade unless explicitly stated.
What are the safety and handling considerations for Erbium(III) oxide?
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Erbium(III) oxide is classified under WGK 2 in Germany. Handling requires appropriate personal protective equipment, including a dust mask (type N95 US recommended), eyeshields, and gloves, to prevent inhalation and skin contact.
How is Erbium(III) oxide packed and shipped?
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Erbium(III) oxide is supplied as a powder. Details regarding specific packaging options for export or bulk quantities can be provided upon request.
How can I request a sample or quote for Erbium(III) oxide?
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To request a sample or a quotation for Erbium(III) oxide, please contact our sales department through the website or by phone.
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