Praseodymium Oxide, Praseodymia, 12037-29-5

Praseodymium Oxide, Praseodymia, 12037-29-5

PRASEODYMIUM OXIDE (PR₆O₁₁)
PRASEODYMIUM OXIDE / PRASEODYMIA / PRASEODYMIUM(III,IV) OXIDE
1. PRODUCT IDENTIFICATION AND CHEMICAL IDENTITY

2. CHEMICAL STRUCTURE
2.1. Molecular Structure
Praseodymium oxide is a mixed-valence oxide of the rare earth element praseodymium and oxygen. It contains both Pr³⁺ and Pr⁴⁺ ions. It has a cubic fluorite-like crystal structure. This mixed-valence structure gives the compound high catalytic activity, oxygen storage capacity, and colorant properties. It is insoluble in water but soluble in strong acids.

Structural Features:

                    PRASEODYMIUM OXIDE [Pr₆O₁₁]
                          |
                Pr³⁺/Pr⁴⁺ - O²⁻ Ionic Bonds
                          |
        +----------------+----------------+
        |                |                |
    Cubic Fluorite     Brown-Black      Mixed Valence
    -like Structure    Powder Form      (Pr³⁺/Pr⁴⁺)

2.2. Structural Properties

3. PHYSICAL AND CHEMICAL PROPERTIES

4. PURITY GRADES

5. STABILITY AND REACTIVITY

5.1. Chemical Reactions

• Reaction with Acids:
  Pr₆O₁₁ + 18HCl → 6PrCl₃ + Cl₂↑ + 9H₂O
  Pr₆O₁₁ + 18HNO₃ → 6Pr(NO₃)₃ + 3NO₂↑ + 9H₂O

• Reduction (at High Temperature):
  Pr₆O₁₁ + H₂ → Pr₂O₃ + H₂O (reduction)

• Oxidation:
  Pr₆O₁₁ + O₂ → PrO₂ (at high temperature)

6. APPLICATION AREAS
6.1. Glass and Ceramic Industry

6.2. Catalyst Applications

6.3. Electronics and Energy

6.4. Metallurgy

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:

• Mixed Valence Structure: Pr₆O₁₁ contains both Pr³⁺ and Pr⁴⁺ ions. This property gives the compound high catalytic activity, oxygen storage capacity, and colorant properties.

• Oxygen Storage Capacity: Plays a critical role in automotive catalytic converters and redox catalysts.

• Colorant Properties: Imparts yellow-green tones to glass and ceramics; provides UV absorption.

• High Purity Requirement: Optical and catalyst applications require high purity (>99.9%).

• 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 reducing 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. Praseodymium oxide is a critical rare earth material with catalytic, optical, and oxygen storage properties due to its mixed-valence structure; careful handling and storage are required due to high purity requirements.