Lanthanum Oxide, Lanthanum Trioxide, Trioxide, 1312-81-8

LANTHANUM OXIDE

1. PRODUCT IDENTIFICATION AND CHEMICAL IDENTITY

2. CHEMICAL STRUCTURE

2.1. Molecular Structure

Lanthanum oxide is the most stable oxide form of lanthanum. Each lanthanum ion (La³⁺) is surrounded by six oxygen ions (O²⁻), exhibiting a hexagonal crystal structure. This structure is a layered structure where lanthanum ions display ninefold or sevenfold coordination. Lanthanum oxide is known for its hygroscopic properties and readily absorbs moisture from the air to form lanthanum hydroxide (La(OH)₃).

Structural Features:

                    LANTHANUM OXIDE (La₂O₃)
                          |
                La³⁺ - O²⁻ Bonds
                          |
                Hexagonal Crystal Structure
                          |
        +----------------+----------------+
        |                |                |
    Layered Structure  High Temperature  Hygroscopic
                    Stability            Property

2.2. Crystal Structure

2.3. Functional Properties

3. PHYSICAL AND CHEMICAL PROPERTIES

4. PURITY GRADES

5. REACTIVITY AND STABILITY

5.1. Chemical Reactions

Reaction with Water (Hydration):

La₂O₃ + 3H₂O → 2La(OH)₃

Reaction with Acid (HCl):

La₂O₃ + 6HCl → 2LaCl₃ + 3H₂O

Reaction with Acid (HNO₃):

La₂O₃ + 6HNO₃ → 2La(NO₃)₃ + 3H₂O

Reaction with CO₂ (Carbonation):

La₂O₃ + 3CO₂ → La₂(CO₃)₃

6. APPLICATION AREAS

6.1. Optical Glass and Fiber

6.2. Advanced Ceramics

6.3. Catalyst Systems

6.4. Electronics

6.5. Battery Materials

6.6. Other Applications

7. PRODUCTION PROCESS

7.1. Ore Sources

Lanthanum oxide is extracted from rare earth ores:

7.2. Production Process Flow

Ore → Crushing/Grinding → Acid/Base Digestion → Leaching
         ↓
Solvent Extraction (Separation of REEs)
         ↓
Lanthanum Concentrate (LaCl₃ or La(NO₃)₃)
         ↓
Precipitation (Carbonate / Hydroxide / Oxalate)
         ↓
Calcination (High Temperature, 800-1000°C)
         ↓
La₂O₃ Powder → Packaging (Moisture-Proof)

7.3. Process Stages

8. ALTERNATIVE MATERIALS COMPARISON

9. SAFETY AND TOXICOLOGY

10. GHS CLASSIFICATION

Signal Word: WARNING

Hazard Pictograms: GHS07 (Exclamation Mark)

11. PRECAUTIONARY STATEMENTS (P-CODES)

12. FIRST AID MEASURES

13. STORAGE AND SHELF LIFE

14. PACKAGING OPTIONS

15. TRANSPORT INFORMATION

16. REGULATORY STATUS

17. OTHER NAMES AND SYNONYMS

• Lanthanum Oxide

• Lanthanum(III) Oxide

• Lanthanum Trioxide

• Lanthanum Sesquioxide

• La₂O₃

• Lanthana

• High Purity Lanthanum Oxide

• Lanthanum Oxide Powder

18. QUICK REFERENCE TABLE

19. CRITICAL NOTICES AND BEST PRACTICES

CRITICAL NOTICES:

1. Hygroscopic Property: Lanthanum oxide readily absorbs moisture from the air. Contact with moisture forms lanthanum hydroxide (La(OH)₃) and increases weight. Must be stored in moisture-proof containers.

2. Reaction with CO₂: Reacts with atmospheric carbon dioxide to form lanthanum carbonate. Should not be left exposed to air for extended periods.

3. Reaction with Acids: Reacts vigorously with acids. Keep away from acids.

4. Dust Control: Inhalation of fine powder may cause respiratory irritation. Use dust mask.

5. High Melting Point: With a melting point of 2315°C, suitable for high temperature applications, but requires appropriate equipment during processing.

6. Purity Sensitivity: Optical and electronic applications require high purity (>99.99%).

BEST PRACTICE RECOMMENDATIONS:

Storage:

• Store in moisture-proof, vacuum-sealed containers

• Store with desiccant (silica gel)

• Store in a cool, dry, well-ventilated area

• Keep away from acids and CO₂ sources

Handling:

• Use in well-ventilated areas

• Use dust mask, protective goggles, and gloves

• Avoid dust formation

• Wash hands after handling

• Immediately reseal container after use

Waste Management:

• Dispose in accordance with local regulations

• Do not discharge into water bodies

• Consider recycling for rare earth recovery

LEGAL DISCLAIMER

This Technical Data Sheet (TDS) is for informational purposes only and is prepared based on available technical data. The user is solely responsible for determining the suitability of the product for their specific application and for complying with all local, national, and international regulations. For complete safety, storage, handling, transport, waste, and regulatory compliance information, the official Safety Data Sheet (SDS/MSDS) provided by the manufacturer/supplier must be consulted. This document does not substitute professional advice. Lanthanum oxide is a hygroscopic material; appropriate precautions must be taken during handling.