Molekula
Gadolinium (III) oxide, 99.9%
Supplying 4,500+ customers in over 80 countries
ISO 9001:2015 & ISO 14001:2015 certified · Supplying laboratories and industry since 2000 · Listed pack sizes are a starting point — we manufacture, source and repack to the quantity you need
Gadolinium (III) oxide is a rare-earth compound with high purity, primarily used in magnetic resonance imaging (MRI) contrast agents, phosphors for lighting, and specialized glass manufacturing. This white to off-white powder is a stable oxide of gadolinium with exceptional magnetic properties. It also serves in nuclear reactor control rods and neutron shielding, and as a component of catalysts, ceramics and laser materials. Catalogue details: CAS 12064-62-9, molecular formula Gd₂O₃, molecular weight 362.50 g/mol, and requires storage at ambient conditions. The product carries a signal word of "Warning" for handling safety. Molekula supplies Gadolinium (III) oxide from research to bulk quantities with full documentation and ISO 9001:2015 traceability.
Example image for illustration only. Other packaging and pack sizes are available.
Pricing & pack sizes
These pack sizes aren't a limit. Molekula manufactures, sources and repacks to order — if you need 500 kg and only see 1 kg listed, . We quote from grams to multi-tonne.
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25 g — £77.90 per pack ex VAT · £93.48 inc. VAT
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Specifications
| Property | Value |
|---|---|
| Appearance | White powder |
| Fe2O3 | ≤ 0.002% |
| La2O3 | ≤ 0.001% |
| Sm2O3 | ≤ 0.002% |
| PbO | ≤ 0.005% |
| Tb4O7 | ≤ 0.002% |
| Dy2O3 | ≤ 0.001% |
| Eu2O3 | ≤ 0.001% |
| Total Rare Earth Oxides (TREO) | ≥ 99.0% |
| Gd2O3/TREO | ≥ 99.95% |
| Yttrium (III) Oxide (Y2O3) | ≤ 0.001% |
| Cerium(IV) Oxide (CeO2) | ≤ 0.001% |
| Silicon Dioxide (SiO2) | ≤ 0.004% |
| Calcium Oxide (CaO) | ≤ 0.003% |
Storage & handling
| Property | Value |
|---|---|
| Storage Temperature | Ambient |
| Acidity | Neutral |
Literature values
Published physical properties of the substance, not batch specifications.
| Property | Value |
|---|---|
| Melting Point | 2339 °C |
| Boiling Point | 3900 °C at 760 mmHg |
Source: PubChem CID 159427 (PAC Chemical Database)
Identification
| Property | Value |
|---|---|
| SKU | 89967852 |
| CAS Number | 12064-62-9 |
| IUPAC Name | bis(gadolinium(3+));tris(oxygen(2-)) |
| EC Number | 235-060-9 |
| Molecular Formula | Gd2O3 |
| Molecular Weight | 362.50 |
| Exact Mass | 365.8359 |
| SMILES | [O-2].[O-2].[O-2].[Gd+3].[Gd+3] |
| InChIKey | CMIHHWBVHJVIGI-UHFFFAOYSA-N |
| InChI | InChI=1S/2Gd.3O/q2*+3;3*-2 |
| PubChem CID | 159427 |
| REACH Code | Y113 |
| TSCA Listed | Yes |
| HTS Code | 2846.90.8090 |
| Tariff Code | 2846906015 |
Safety & GHS
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Health Hazard
GHS07
Hazard statements
- H319 Causes serious eye irritation
Precautionary statements
- P264 Wash thoroughly after handling
- P280 Wear protective gloves/protective clothing/eye protection/face protection
- P305+351+338 IF IN EYES: Rinse with water for several minutes. Remove contact lenses if present and easy to do. Continue rinsing
Documents
Safety Data Sheets (SDS)
Available in English.
Certificate of Analysis (CoA) by batch
Enter a lot or batch number to retrieve the CoA for that specific batch. We can generate one from spec data if no PDF is on file.
Synonyms
- Digadolinium trioxide
- Gadolinia
- Gadolinium oxide
- Gadolinium oxide (2/3)
- Gadolinium oxide (Gd2O3)
- Gadolinium sesquioxide
- Gadolinium trioxide
- Gadolinium(3+) oxide
- gadolinium(3+);oxygen(2-)
- Gd2O3
Frequently asked questions
What is gadolinium(III) oxide primarily used for?
Gadolinium(III) oxide is commonly used in the manufacturing of gadolinium gallium garnet (GGG) for substrates in semiconductor and optical applications, as well as in phosphors, MRI contrast agents, and specialized glass manufacturing.
What is the chemical formula and molecular weight of gadolinium(III) oxide?
The chemical formula is **Gd₂O₃**, and the molecular weight is **362.50 g/mol**.
How should gadolinium(III) oxide be stored?
Store at **ambient conditions** in a dry, well-ventilated area, away from moisture and incompatible substances.
What purity grades of gadolinium(III) oxide does Molekula supply?
Molekula supplies gadolinium(III) oxide at **99.9% purity** as standard.
Can Molekula supply gadolinium(III) oxide in bulk quantities?
Yes, bulk quantities are available upon request—please contact our sales team for pricing and lead times.
What documentation is provided with an order of gadolinium(III) oxide?
Each order includes a **Certificate of Analysis (CoA)**, Material Safety Data Sheet (MSDS), and a product specification sheet.
Ready to order or need a custom pack?
Tell us the product, grade, and quantity — Molekula usually responds within one working day with pricing and lead time.