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

Molecular Weight

325.809

IUPAC 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

PubChem CID

150906

EINECS Number

215-200-5

MDL Number

MFCD00011071

HSN No

28469000 / 2846901200

CAS Number

1312-81-8

Molecular Formula

La2O3

Molecular Weight

325.809

IUPAC 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

PubChem CID

150906

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

COA

Download

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

Explore Metallurgy Chemicals Portfolio

CAS No : 7786-81-4

Nickel Sulfate Monohydrate

Category : Metal Compounds & Salts

Sub-Category : Nickel Compounds

Description : Nickel Sulfate Monohydrate (CAS No: 14104-80-4) is a high-value inorganic compound that occupies a s...

View Product

CAS No : 13939-06-5

Molybdenum Hexacarbonyl

Category : Metal Compounds & Salts

Sub-Category : Specialty Organometallic Compounds

Description : Molybdenum hexacarbonyl is an essential high-performance zero-valent coordination complex that occup...

View Product

CAS No : 7440-32-6

Titanium powder

Category : Electronic & Specialty Grade Materials

Sub-Category : High Purity Metals, Compounds & Powders

View Product

CAS No : 39380-74-0

Category : Metal Compounds & Salts

Sub-Category : General Metal Salts & Reagents

Description : Nickel (II) Carbonate Basic (encompassing CAS 39380-74-0 & 12244-51-8) - high purity inorganic compo...

View Product

Company

Resources

Partner with us

Lanthanum Sesquioxide

About Lanthanum Sesquioxide