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 (La2O3) is a dense, white, high-purity rare earth compound recognized for its high melting point, high refractive index, and high dielectric constant (k). Chemically a basic ceramic, reacting slowly with water to form the hydroxide and possessing a strong affinity for carbon dioxide and phosphate ions. ...

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%)

Metallurgy Chemicals Alloy Additive

Used in the production of nodular cast iron and speciality alloys to enhance malleability and improve mechanical properties

Catalysis & Electronics – Catalyst Promoter

Used in fluid catalytic cracking (FCC) and as a stabilizer for other catalyst systems (e.g., automotive converters)

High-k Dielectrics

Precursor for thin film dielectrics in semiconductors and memory chips

Optics & Ceramics High-Refractive Glass

Essential component in camera lenses, binoculars, and fiber optics to reduce chromatic aberration and enhance image clarity

Ceramics

To abricate advanced electro-ceramics and thermal barrier coatings

Pharmaceuticals Phosphate Binder

Preferred in drugs to treat hyperphosphatemia in patients with chronic kidney disease (CKD). Binds dietary phosphate in the gastrointestinal tract

Optical Modifier

An additive to manufacture high-refractive-index optical glass and precision lenses to reduce chromatic aberration and enhance clarity

Catalyst Promoter

A stabilizing agent used in fluid catalytic cracking (FCC) and automotive emission systems to improve fuel efficiency and emission reduction

High-k Dielectric Precursor

A raw material for thin-film capacitors and gate dielectrics in advanced semiconductor and memory chip manufacturing

Ceramic Dopant

An additive to improve mechanical strength, thermal stability, and corrosion resistance in advanced electro-ceramics and thermal barrier coatings

Phosphate Binder

A pharmaceutical ingredient used in medications to treat hyperphosphatemia by binding dietary phosphate in the gastrointestinal tract

Alloy Additive

A metallurgical agent used in the production of nodular cast iron and specialty alloys to enhance malleability and mechanical properties

Energy Storage Material

A component in solid oxide fuel cells (SOFCs), battery electrodes, and hydrogen storage systems for clean-energy technologies

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

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Lanthanum Sesquioxide FAQs

Minimum Order Quantity

25 kg (pilot) · 1 MT (commercial)

Lead Time

3 – 5 weeks ex-works

Incoterms

FOB · CIF

Packaging

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

Regional Availability

India · EU · Middle East · Southeast Asia

Documentation

SDS · COA · TDS available on request

Compliance & Quality

REACH registered*

GHS/SDS available

ISO 9001:2015 site*

RoHS compliant*

Global sourcing network

Consistent quality & reliability

End-to-end technical support

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