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

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

📑 Quick Facts

• CAS No: 1308‑87‑8

• Chemical Formula: Dy₂O₃

• Molecular Weight: 373.00 g/mol

• Density: ~7.8 g/cm³

• Packaging Types: 25 kg bags, drums, laboratory bottles

• HS Code: 2846.90 (rare‑earth oxides category)

⚙️ Technical Properties

• Appearance: White to pale pink crystalline powder

• Melting Point: ~2330–2350 °C

• Solubility: Insoluble in water, soluble in acids

• Crystal Structure: Cubic (sesquioxide, Ia3 space group)

• Purity Grades: 99.0–99.999% (4N–6N)

🏭 Detailed Applications

• Ceramics & Glass: Used in laser glass, optical ceramics, and high‑temperature pigments

• Lighting & Phosphors: Component in phosphor formulations for lamps and LEDs

• Metallurgy: Raw material for dysprosium metal, alloyed into NdFeB magnets to improve high‑temperature performance

• Research: Nanopowder forms for optoelectronics and catalysis

🔬 Production Methods / Sources

• Extracted from rare‑earth concentrates via solvent extraction and precipitation

• Calcination of dysprosium salts (nitrate, carbonate) to oxide form

• High‑purity grades produced by repeated crystallization and thermal purification

📊 Sector Suitability Table

📜 Mandatory Processes (Regulatory Requirements)

• REACH: Registered as a rare‑earth oxide

• CLP/GHS: Classified as irritant; heavy metal oxide handling precautions required

• Transport: Non‑flammable, but requires labeling as hazardous chemical

🧾 Other Names

• Dysprosia

• Dysprosium sesquioxide

• Dysprosium trioxide

• Didysprosium trioxide

🔄 Alternatives / Substitutes

• Other rare‑earth oxides: Er₂O₃, Tb₂O₃ depending on optical/phosphor requirements

• Dy salts: Dysprosium nitrate, chloride (solution chemistry)

📑 Regulatory & Compliance

• Documentation: COA (purity, trace metals), SDS

• Standards: ISO 9001/14001 quality systems

• Import/Export: HS Code 2846.90, subject to rare‑earth trade regulations

🛡️ Safety & MSDS Summary

• GHS Pictograms: ⚠️ Irritant, 🌍 Environmental hazard

• Storage: Dry, sealed packaging, avoid moisture

• PPE: Gloves, goggles, dust mask/respirator

• Waste: Collect as rare‑earth oxide waste, dispose via licensed facilities

🌍 Market & Commercial Information

• Purity Grades: 99%, 99.9%, 99.99%, 99.999%

• Packaging: 25 kg bags, drums, laboratory bottles

• Producer Regions: China, USA, Europe (rare‑earth refining hubs)

• Trade Names: Dysprosia, Dy₂O₃

🧪 Quality & Analytical Data

• Tests: ICP‑OES (trace metals), XRD (phase), BET (surface area), particle size distribution

• Nanopowder Grades: Available for research, optoelectronics, catalysis

🌱 Environmental & Sustainability Aspects

• Waste Management: Rare‑earth oxide waste; recycling via metallurgical recovery

• Carbon Footprint: High due to rare‑earth mining/refining; sustainability programs focus on recycling NdFeB magnets