Lanthanum Sesquioxide

Lanthanum Sesquioxide

CAS Number
1312-81-8
Molecular Formula
La2O3
Alloy Additive & StabilizerOptical Modifier & Catalyst PromoterPhosphate BinderHigh-k Dielectric PrecursorRare Earth OxidesRRE

About Lanthanum Sesquioxide

Lanthanum Oxide (chemical formula La₂O₃) is a fine white crystalline powder belonging to the lanthanide series of rare earth elements. With a molecular weight of approximately 325.81 g/mol, Lanthanum sesquioxide is recognized for its high melting point, high refractive index, and high dielectric constant (k). Due to t...

Lanthanum Sesquioxide Specifications

CAS Number
1312-81-8
Molecular Formula
La2O3
IUPAC NameORBotanical Name
bis(lanthanum(3+));tris(oxygen(2-))
Canonical SMILES
[O-2].[O-2].[O-2].[La+3].[La+3]
InChI Key
MRELNEQAGSRDBK-UHFFFAOYSA-N
InChI
1S/2La.3O/q2*+3;3*-2
EINECS Number
215-200-5
MDL Number
MFCD00011071
HSN No
28469000 / 2846901200
Molecular Weight
325.809
TREO
≥98.00%
La2O3/TREO
99.99%
Melting Point
2315ºC
Boiling Point
4200℃
Refractive Index
1.88
PSA
43.370
LogP
-0.30600
Density
6.51 g/cm3
Molecular Weight
325.8092
Physical appearance
White solid; Pellets, large crystals, or dry powder; White to almost white powder to crystal
Safety Statements code
S26;S39
Risk Statements
R36
Precautionary Statement Codes
P261, P264, P264+P265, P271, P280, P302+P352, P304+P340, P305+P351+P338, P319, P321, P332+P317, P337+P317, P362+P364, P403+P233, P405, and P501
Hazard Classes and Categories
Skin Irrit. 2 (39.5%) Eye Irrit. 2 (40.1%)

Glass and optical industry

Lanthanum Oxide is widely used in the glass industry to manufacture high-refractive-index optical glass, camera lenses, and precision instruments. It's the ability to enhance clarity and reduce dispersion. U.S. optical manufacturers and lens producers buy Lanthanum Oxide from trusted suppliers like Scimplify to ensure consistency and purity.

Catalysts and Petrochemical Industry

Lanthanum Oxide functions as a catalyst and catalyst support in refinery cracking units and automotive emission systems. It helps improve fuel efficiency, hydrocarbon conversion, and emission reduction in accordance with U.S. environmental standards.

Electronics and Semiconductor manufacturing

High-purity Lanthanum Oxide powder supplied by Lanthanum sesquioxide manufacturers is used as a dielectric layer in semiconductor devices, thin-film capacitors, and integrated circuits. Its high permittivity and electrical insulation properties make it ideal for advanced chip production and sensor manufacturing.

Ceramics, Metallurgy, and Refractories

Lanthanum Oxide improves mechanical strength, thermal stability, and corrosion resistance in ceramic materials and metallurgical alloys. U.S. ceramic and refractory manufacturers rely on Lanthanum Oxide suppliers for consistent grade quality that meets high-temperature performance requirements.

Energy Storage and Green Technologies

Lanthanum Oxide plays an important role in fuel cells, battery electrodes, phosphors, and hydrogen storage systems, supporting the U.S. clean-energy transition. Energy and materials companies buy Lanthanum Oxide in bulk for use in solid oxide fuel cells (SOFCs) and rare-earth phosphors used in LED lighting and renewable power systems.

Storage Condition

Store in a tightly closed container

Storage Incompatibility

Store in a cool, dry, well-ventilated area away from incompatible substances

Storage Stability

Stable

Storage Sensitivity

Hygroscopic

Lanthanum Sesquioxide FAQs

Minimum Order Quantity

25 kg (evaluation) · 1 MT (commercial)

Lead Time

3 – 5 weeks estimated

Delivery Terms

FOB*

Packaging

20 L pails, 200 L HDPE drums, 1000 L IBC

US Availability

US Facility Inventory

Documentation

US SDS · COA · TDS · Specification sheet

US Regulatory & Quality Information

TSCA status*

US SDS / HazCom*

GHS classification*

ISO 9001:2015 site*

DOT shipping classification*

FDA status*

EPA status*

California Prop 65*

Reliable US supply chain

Regulatory compliance

On-time delivery

Technical expert support

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