Dysprosium Oxide, Dysprosium Trioxide, Dysprosia, Dysprosium Sesquioxide, Didysprosium Trioxide, 1308‑87‑8

Dysprosium Oxide, Dysprosium Trioxide, Dysprosia, Dysprosium Sesquioxide, Didysprosium Trioxide, 1308‑87‑8

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

2. CHEMICAL STRUCTURE
2.1. Molecular Structure
Dysprosium oxide is the oxide compound of the rare earth element dysprosium. Dysprosium ions (Dy³⁺) and oxide ions (O²⁻) are present in a 2:3 ratio. It has a cubic crystal structure (Ia3 space group). It is known for its high melting point and thermal stability. It is insoluble in water but soluble in acids. It is slightly hygroscopic and stable under ambient conditions.

Structural Features:

                    DYSPROSIUM OXIDE [Dy₂O₃]
                          |
                Dy³⁺ - O²⁻ Ionic Bonds
                          |
        +----------------+----------------+
        |                |                |
    Cubic Crystal     White-Pink       High Thermal
    Structure (Ia3)   Powder Form      Stability

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

6. APPLICATION AREAS
6.1. Ceramic and Glass Industry

6.2. Phosphor and Lighting

6.3. Metal Production and Magnets

6.4. Research and Nano-Applications

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:

• Hygroscopic Nature: Dysprosium oxide is slightly hygroscopic; it may absorb CO₂ and moisture over time, forming basic carbonate. This may affect purity and performance. Vacuum-sealed or inert atmosphere packaging is recommended.

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

• High Purity Requirement: Optical, phosphor, and laser applications require high purity (>99.9%). Purity level directly affects application performance.

• Incompatibility: Reacts with strong acids. Acid use must be controlled.

• 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 vacuum-sealed or inert gas (N₂ or Ar) filled containers.

  • Avoid exposure to humid and CO₂-rich environments.

  • 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 (economically viable).

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 optical and magnetic applications; careful handling and storage are required due to high purity requirements and hygroscopic nature.