Molekula
Lanthanum oxide
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
Lanthanum oxide (La2O3) is a white, hygroscopic powder used primarily in the production of specialty glasses, optical lenses, and high-performance ceramics. It also serves as a catalyst in petrochemical refining and as a dopant in phosphors and superconductors. This high-purity compound has a molecular weight of 325.81 g/mol and is stored at ambient conditions. The product carries a signal word of "Warning" for safety handling. Molekula supplies lanthanum 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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100 g — $56.10 per pack
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Prices exclude VAT/sales tax and shipping.
Specifications
| Property | Value |
|---|---|
| Appearance | White powder |
| La2O3/TREO | ≥99.99% |
| Pr6O11 | ≤0.0010% |
| Total Rare Earth Oxides (TREO) | ≥98.% |
| Yttrium (III) Oxide (Y2O3) | ≤0.0005% |
| Neodymium (III) Oxide (Nd2O3) | ≤0.0010% |
| Cerium(IV) Oxide (CeO2) | ≤0.0015% |
| Silicon Dioxide (SiO2) | ≤0.0035% |
| Iron (III) Oxide (Fe2O3) | ≤0.01% |
Storage & handling
| Property | Value |
|---|---|
| Storage Temperature | Ambient |
| Acidity | Neutral |
Literature values
Published physical properties of the substance, not batch specifications.
| Property | Value |
|---|---|
| Melting Point | 2304 °C |
| Boiling Point | 3620 °C at 760 mmHg |
Source: PubChem CID 150906 (PAC Chemical Database)
Identification
| Property | Value |
|---|---|
| SKU | 49375751 |
| CAS Number | 1312-81-8 |
| IUPAC Name | bis(lanthanum(3+));tris(oxygen(2-)) |
| EC Number | 215-200-5 |
| Molecular Formula | La2O3 |
| Molecular Weight | 325.81 |
| Exact Mass | 325.7975 |
| SMILES | [O-2].[O-2].[O-2].[La+3].[La+3] |
| InChIKey | MRELNEQAGSRDBK-UHFFFAOYSA-N |
| InChI | InChI=1S/2La.3O/q2*+3;3*-2 |
| PubChem CID | 150906 |
| REACH Code | Y110 |
| TSCA Listed | Yes |
| HTS Code | 28469080 |
| Tariff Code | 2846904000 |
Safety & GHS
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Health Hazard
GHS07
Hazard statements
- H315 Causes skin irritation
- H319 Causes serious eye irritation
- H335 May cause respiratory irritation
Precautionary statements
- P231+232 Handle under inert gas. Protect from moisture
- P261 Avoid breathing dust/fume/gas/mist/vapours/spray
- P280 Wear protective gloves/protective clothing/eye protection/face protection
- P302+352 IF ON SKIN: Wash with soap and water
- P304+340 IF INHALED: Remove victim to fresh air and keep at rest in a position comfortable for breathing
- 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, French, German, Italian, Spanish.
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
- Dilanthanum oxide
- Dilanthanum trioxide
- La(2)O(3)
- Lanthana
- Lanthania (La2O3)
- Lanthanum oxide (La2O3)
- Lanthanum sesquioxide
- Lanthanum trioxide
- Lanthanum(3+) oxide
- Lanthanum(III) oxide
Frequently asked questions
What is lanthanum oxide primarily used for?
Lanthanum oxide is commonly used in optical glasses, catalysts, carbon arc lighting, and as a precursor for other lanthanum compounds.
What is the chemical formula and molecular weight of lanthanum oxide?
The chemical formula is **La₂O₃** with a molecular weight of **325.81 g/mol**.
What safety classification does lanthanum oxide have?
Lanthanum oxide is labeled with a **Signal Word: Warning** under GHS classification.
How should lanthanum oxide be stored?
Store lanthanum oxide in a **dry, ambient-temperature environment**, protected from moisture and humidity.
Does Molekula supply lanthanum oxide in bulk quantities?
Yes, Molekula can provide lanthanum oxide in bulk, with quantities tailored to customer requirements.
What documentation is provided with a lanthanum oxide order?
Each order includes a **Certificate of Analysis (CoA)**, Safety Data Sheet (SDS), 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.