Praseodymium Chloride, Praseodymium Trichloride, 17272-46-7

Praseodymium Chloride, Praseodymium Trichloride, 17272-46-7

1. General Information

• Chemical Name: Praseodymium(III) chloride

• CAS No: 17272-46-7

• Formula: PrCl₃

• Molecular Weight: 247.27 g/mol

• Appearance: Greenish-yellow crystalline solid, hygroscopic

• Packaging Types: Glass bottles, sealed containers, 25 kg drums

2. Technical Properties

• Density: ~4.19 g/cm³

• Melting Point: ~770 °C

• Boiling Point: ~1,600 °C

• Solubility: Soluble in water and ethanol, reacts with moisture

• Crystal Structure: Hexagonal (rare-earth halide type)

3. Detailed Applications

• Optical Materials: Precursor for praseodymium-doped lasers and phosphors

• Glass & Ceramics: Used in coloring and specialty glass production

• Catalysis: Applied in organic synthesis reactions

• Research: Rare-earth chemistry and advanced materials development

4. Production Method / Sources

• Reaction of praseodymium oxide (Pr₂O₃) with hydrochloric acid

• Extraction and purification from rare-earth ores

5. Sectoral Suitability Table

6. Mandatory Processes (Regulatory Requirements)

• REACH registration (EU)

• CLP/GHS labeling compliance

• National chemical notification requirements

7. Other Names

• International: Praseodymium trichloride

• Commercial: PrCl₃

• Common Name: Praseodymium chloride

8. Alternative Products / Substitutes

• Praseodymium oxide (Pr₂O₃)

• Praseodymium nitrate (Pr(NO₃)₃)

9. Regulatory & Compliance

• REACH: Registered substance

• TS EN: Compliant with chemical standards

• FDA/EFSA: Not approved as food additive

• ISO: Produced under ISO 9001 quality systems

10. Safety & MSDS Summary

• Hazards: Irritant, moisture-sensitive

• GHS Symbols: ⚠️ Irritant

• Storage: Airtight, moisture-free environment

• Transport: General chemical transport rules

• PPE: Gloves, goggles, protective clothing

11. Market & Commercial Information

• Packaging: 25 kg drums, sealed ampoules for lab-grade

• Trade Names: Available from Alfa Aesar, Sigma-Aldrich, niche rare-earth suppliers

• Main Producer Countries: China, USA, Germany

12. Quality & Analytical Data

• Purity Levels: 99.9% – 99.99% (trace metals basis)

• Forms: Anhydrous crystalline solid, hydrates also available

• Testing Methods: ICP-MS, XRD, FTIR

13. Environmental & Sustainability Aspects

• Rare-earth mining has high environmental impact

• Requires controlled disposal due to reactivity with moisture

• Limited recycling pathways compared to common salts

14. Visual Support

• GHS Pictograms: ⚠️ Irritant

• Packaging Examples: Glass bottles, drums

• Sector Suitability Table: ✔/✖ marks shown above