Dysprosium Oxide, Dysprosia, Dysprosium Sesquioxide, 1308-87-8

Dysprosium Oxide, Dysprosia, Dysprosium Sesquioxide, 1308-87-8

DYSPROSIUM OXIDE (DY₂O₃)
DYSPROSIUM OXIDE / DYSPROSIA / DYSPROSIUM SESQUIOXIDE / DYSPROSIUM(III) OXIDE
1. PRODUCT IDENTIFICATION AND CHEMICAL IDENTITY

2. CHEMICAL STRUCTURE
2.1. Molecular Structure
Dysprosium oxide is an oxide of the rare earth element dysprosium and oxygen. Dysprosium ions (Dy³⁺) and oxide ions (O²⁻) are present in a 2:3 ratio. It has a cubic crystal structure (bixbyite type). It is known for its strong paramagnetic properties, high thermal stability, and role in nuclear applications. It is insoluble in water but soluble in strong acids.

Structural Features:

                    DYSPROSIUM OXIDE [Dy₂O₃]
                          |
                Dy³⁺ - O²⁻ Ionic Bonds
                          |
        +----------------+----------------+
        |                |                |
    Cubic (Bixbyite)   White Powder      Magnetic/Nuclear
    Crystal Structure                   Active

2.2. Structural Properties

3. PHYSICAL AND CHEMICAL PROPERTIES

4. PURITY GRADES

5. STABILITY AND REACTIVITY

5.1. Chemical Reactions

• Reaction with Acids:
  Dy₂O₃ + 6HCl → 2DyCl₃ + 3H₂O
  Dy₂O₃ + 6HNO₃ → 2Dy(NO₃)₃ + 3H₂O
  Dy₂O₃ + 3H₂SO₄ → Dy₂(SO₄)₃ + 3H₂O

• Carbonation (Over Time):
  Dy₂O₃ + 3CO₂ + 3H₂O → Dy₂(CO₃)₃·3H₂O (slow)

6. APPLICATION AREAS
6.1. Magnets

6.2. Ceramic and Glass Industry

6.3. Nuclear Technology

6.4. Electronics and Optics

6.5. Sectoral Suitability Table

7. PRODUCTION PROCESS

7.1. Major Producing Countries

8. ALTERNATIVE / SUBSTITUTE PRODUCTS

9. SAFETY AND TOXICOLOGY

9.1. GHS Classification

Signal Word: WARNING

Hazard Pictograms: GHS07 (Exclamation Mark)

10. PRECAUTIONARY STATEMENTS (P-CODES)

11. FIRST AID MEASURES

12. STORAGE AND SHELF LIFE

13. PACKAGING OPTIONS

14. TRANSPORT INFORMATION

15. REGULATORY STATUS

16. OTHER NAMES AND SYNONYMS

17. QUICK REFERENCE TABLE

18. CRITICAL WARNINGS AND BEST PRACTICES

CRITICAL WARNINGS:

• Magnetic Properties: Dysprosium is added to NdFeB magnets to improve high-temperature resistance. This property is critical for applications such as electric vehicle motors and wind turbines.

• Nuclear Applications: Dysprosium isotopes have high neutron capture cross-sections; used in nuclear control rods and radiation shielding materials.

• High Purity Requirement: Magnetic, optical, and nuclear applications require high purity (>99.9%).

• High Value: Dysprosium is a critical and valuable rare earth element. Losses should be minimized and recycling options explored.

• Powder Hazard: Fine powder form may cause respiratory tract irritation. Dust control measures must be taken.

BEST PRACTICE RECOMMENDATIONS:

• Storage:

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

  • Use moisture-proof, tightly closed containers.

  • Keep away from acids and oxidizing agents.

  • Store at room temperature (15-25°C).

• Handling:

  • Use in well-ventilated areas with local exhaust ventilation.

  • Use a dust mask (N95 or better), protective goggles, and gloves.

  • Avoid dust formation and inhalation.

  • Wash hands thoroughly after handling.

  • For dissolution in acids, add oxide to acid slowly with cooling and stirring.

• Waste Management:

  • Dispose of in accordance with local regulations.

  • Do not discharge into water sources.

  • For large quantities, rare earth recycling and recovery should be considered.

LEGAL DISCLAIMER
This Technical Data Sheet (TDS) is for informational purposes only and has been prepared based on available technical data. The user is solely responsible for determining the suitability of the product for their specific applications and for complying with all local, national, and international regulations. For complete safety, storage, handling, transport, disposal, 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. Dysprosium oxide is a critical rare earth material for magnetic and nuclear applications; careful handling, storage, and recycling planning are required due to high purity requirements and value.