Yttrium(III) oxide
Yttrium(III) oxide (CAS: 1314-36-9, Formula: Y₂O₃, MW: 225.81 g/mol) is a high-purity ceramic material. It is essential in advanced applications, particularly in the development of intermediate temperature solid oxide fuel cells (IT-SOFCs). Yttrium oxide also serves as a precursor for physical vapor deposition (PVD) processes, enabling the creation of thermal barrier coatings and specialized thin films.
- IUPAC
- Yttria

Solid Oxide Fuel Cells (SOFCs)
Used in the fabrication of thin films for electrolyte and electrode layers in intermediate temperature solid oxide fuel cells (IT-SOFCs). Yttria-stabilized zirconia films are deposited via physical vapor deposition.
Thermal Barrier & Protective Coatings
Yttrium-containing films derived from Yttrium(III) oxide are employed as thermal barrier and protective coatings in thermoelectric devices.
Phosphor Applications
Rare earth doped yttrium oxide films are investigated for their potential use in phosphor applications due to their luminescent properties.
Physical Vapor Deposition (PVD)
Serves as a sputtering target or vapor deposition precursor for depositing thin films, crucial in micro/nanoelectronics and materials science.
| Molecular weight | 225.81 |
|---|---|
| Linear formula | Y2O3 |
| Assay | 99.999% trace metals basis |
| Density | 5.01 g/mL at 25 °C(lit.) |
| Concentration | 5 wt. % in H2O |
| Particle size | <50 nm (XRD) |
| Contains / stabiliser | 1.0 wt. % Disperbyk®-190 as dispersant |
| Melting point | 2410 °C(lit.) |
| Application | Solid Oxide Fuel cells operating at temperatures below 800 C (also known as intermediate temperature solid oxide fuel cell, IT-SOFC) are currently the topic of much research and development owing to the high degradation rates and materials costs incurred for SOFC operating at temperatures above 900 C. Thin films of electrode and electrolyte layers is one of the ways to achieve high performances in IT-SOFC.Yttrium oxide sputtering target can be used for physical vapor deposition of thin films of yttria stabilized zirconia layers for IT-SOFC. Yttrium containing films are used as thermal barrier and protective coatings in thermoelectric devices, rare earth doped yttrium oxide films are studied for phosphor applications. |

Hazard statements
- H315Causes skin irritation
- H335May cause respiratory irritation
Precautionary statements
- P261Avoid breathing dust, fume, gas or vapours
| Water hazard class (WGK, DE) | 1 |
|---|---|
| Hazard codes (EU) | Xi |
| Risk statements (R) | 36/37/38 |
| Safety statements (S) | 26 |
Hazard information is provided for guidance. Always consult the product Safety Data Sheet (SDS), available on request, before handling.
| Conductivity | 10-100 μS/cm |
|---|---|
| Ph Range | 7 - 9 |
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 Yttrium(III) oxide used for?
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Yttrium(III) oxide is primarily used in the development of intermediate temperature solid oxide fuel cells (IT-SOFCs), as a precursor for physical vapor deposition (PVD) of thin films, for thermal barrier coatings, and in phosphor applications.
What is the CAS number and chemical formula for Yttrium(III) oxide?
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The CAS number for Yttrium(III) oxide is 1314-36-9, and its chemical formula is Y₂O₃.
What grade and purity does Tech Serve Solutions supply?
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Tech Serve Solutions supplies Yttrium(III) oxide with a purity of 99.999% trace metals basis. TSS does not represent this product as USP, BP, or EP grade.
What are the safety considerations for handling Yttrium(III) oxide?
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Yttrium(III) oxide is classified as a GHS07 irritant. It may cause skin irritation (H315) and respiratory irritation (H335). Handle with appropriate personal protective equipment in a well-ventilated area. Always consult the Safety Data Sheet (SDS) before use.
Is Yttrium(III) oxide a controlled substance?
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The provided data does not indicate that Yttrium(III) oxide is a controlled substance.
How is Yttrium(III) oxide shipped and exported?
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Tech Serve Solutions, a specialist global supplier and exporter, handles the packing, shipping, and export of Yttrium(III) oxide according to international regulations.
How can I request a quote or sample for Yttrium(III) oxide?
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To request a quote or sample for Yttrium(III) oxide, please contact our sales team through the TSS website or via direct inquiry.
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