Product Overview
Yttrium Hydroxide, chemically defined as Yttrium(III) Hydroxide with the molecular formula Y(OH)₃, is a high-purity and versatile rare earth hydroxide compound. It is a white crystalline or gelatinous powder featuring weak alkalinity, excellent chemical activity and stable intermediate properties. As the most critical upstream precursor for yttrium-series oxide materials, Yttrium Hydroxide is widely adopted in rare earth deep processing, optoelectronic materials, advanced ceramics, catalyst synthesis and new energy industries. With reliable batch stability and high conversion purity, it has become a fundamental raw material for global high-end functional material manufacturing.
Basic Product Information
CAS Number: 16469-22-0 Molecular Formula: Y(OH)₃ Molecular Weight: 139.93 EINECS Number: 240-520-7 Appearance: White fine powder or gelatinous solid Purity Grades: 99%, 99.9%, 99.99% (4N), 99.999% (5N) high purity Solubility: Insoluble in water, freely soluble in mineral acids and strong acidic solutions Basic Features: High chemical activity, easy thermal decomposition, low impurity residue, good sintering performance, carbonation resistance under sealed storage
Production Features
Our high-purity Yttrium Hydroxide is produced through precise solution precipitation, impurity filtration, low-temperature drying and ultrafine crushing processes. The product features uniform particle size distribution, low soluble impurity content, high chemical activity and excellent batch consistency. Strict multi-stage purification and quality inspection standards are implemented during production to effectively control trace metal impurities and avoid agglomeration, fully meeting the high-standard precursor requirements for high-purity oxide synthesis and advanced material customization.
Core Physical and Chemical Properties
Structural and Thermal Properties
Yttrium Hydroxide possesses superior thermal decomposition performance and structural stability as a rare earth intermediate material. It maintains stable physical properties under normal temperature and sealed storage conditions. When heated above 190°C, it gradually decomposes and removes hydroxyl groups, and can be completely converted into high-purity yttrium oxide after high-temperature calcination. The decomposition process is stable and controllable without sudden phase explosion or impurity precipitation, ensuring high yield and high purity of downstream oxide products. In addition, it has uniform particle morphology and good looseness, providing excellent sintering activity for subsequent material processing.
Chemical and Reaction Properties
Chemically, Yttrium Hydroxide exhibits moderate weak alkalinity and high reaction activity. It can rapidly dissolve in various inorganic acids to form corresponding yttrium salt solutions, including yttrium chloride, yttrium nitrate and yttrium phosphate, supporting the preparation of diverse yttrium derivative materials. The product features strong anti-carbonation performance in sealed environments and stable chemical composition. Compared with other rare earth precursors, it has lower impurity introduction rate and higher reaction controllability, which is suitable for precise chemical synthesis and industrial continuous production.
Main Industrial Applications
Application Scope
High-purity Yttrium Hydroxide serves as a core intermediate raw material in the rare earth processing industry, widely covering optoelectronic luminescence, advanced ceramics, chemical catalysis, new energy and precision metallurgy fields. Its main application scenarios are as follows:
1. Precursor for High-Purity Yttrium Oxide
It is the most mainstream and high-quality precursor for industrial production of high-purity Yttrium Oxide (Y₂O₃). After calcination and decomposition, Yttrium Hydroxide can produce ultra-high purity yttrium oxide with uniform particle size and low defect rate, which is widely used for yttrium-stabilized zirconia (YSZ) ceramics, YAG laser crystals and high-end optical materials. The precursor conversion process effectively reduces residual impurities and significantly improves the finished product performance stability.
2. Rare Earth Phosphor & Optoelectronic Materials
Yttrium Hydroxide is applied in the preparation of rare earth tri-color phosphors and long-afterglow luminescent materials. As an initial yttrium source for solution doping synthesis, it ensures uniform ion distribution and high luminous efficiency of phosphor materials. It is widely used in LED lighting, display screens, fluorescent devices and luminescent coating manufacturing, effectively improving color rendering index and service life of optoelectronic products.
3. Advanced Ceramic & Electronic Ceramic Additives
The product acts as an excellent modifier and sintering aid for structural ceramics and dielectric ceramics. It can optimize ceramic sintering activity, improve material compactness, high-temperature toughness and wear resistance, and reduce thermal expansion coefficient. It is widely used in precision electronic ceramics, high-temperature resistant ceramic components and aerospace thermal barrier ceramic materials.
4. Chemical Catalyst & Environmental Materials
Yttrium Hydroxide can be used for preparing rare earth composite catalysts and catalyst carriers. It provides stable yttrium active sites for petrochemical cracking, organic synthesis and environmental purification reactions, improving catalytic efficiency and reaction selectivity. Meanwhile, it can serve as an adsorbent for industrial wastewater treatment, effectively adsorbing heavy metal ions and harmful pollutants.
5. Metallurgical Modification & New Energy Materials
In the metallurgical industry, it is used as a rare earth modifier for aluminum, magnesium and high-temperature alloys to refine grains, purify internal impurities and enhance alloy strength and corrosion resistance. In the new energy field, it is applied for electrode material modification, optimizing structural stability and improving cycle life and safety performance of energy storage batteries.
Technical Reference Data
The following technical parameters are tested under standard laboratory conditions (25°C, 1 atm), serving as reliable reference for industrial formulation design, material selection and production process verification:
- Decomposition Temperature: ≥190°C (initial dehydration)
- Calcination Conversion Temperature: 800–1000°C (fully converted to Y₂O₃)
- Bulk Density: 0.5–0.8 g/cm³
- D50 Particle Size: 1–8 μm (customizable)
- Loss on Ignition (LOI): ≤22.0%
- Water Content: ≤0.2%
- Total Rare Earth Purity: ≥99.9%–99.999%
- Insoluble Substance in Acid: ≤0.01%
Product Advantages
- High Conversion Purity: Ultra-low trace impurities, high calcination conversion rate, no secondary pollution, ensuring high-purity downstream oxide products.
- High Chemical Activity: Excellent acid solubility and reaction activity, suitable for various solution synthesis and continuous industrial production.
- Stable Batch Consistency: Controlled particle size and uniform morphology, low agglomeration rate, stable physical and chemical properties in each batch.
- Controllable Thermal Performance: Gentle and stable thermal decomposition process, easy temperature control, suitable for precision material preparation processes.
- Customized Service Support: Provide customized purity, particle size and drying indicators, with complete technical documents and global after-sales support.
Packaging & Storage Instructions
Standard Packaging: Moisture-proof vacuum sealed packaging (1kg/bag) and anti-corrosion iron drum packaging (25kg/drum), customized packaging is available on request. Storage Conditions: Store in a dry, cool and ventilated warehouse environment. Keep tightly sealed at all times to prevent moisture absorption and carbonation caused by contact with air. Avoid contact with strong acids, strong alkalis and oxidizing substances. Long-term storage requires low-humidity environment to maintain product activity and stability.
Conclusion
Product Summary
Yttrium Hydroxide (Y(OH)₃) is an indispensable foundational intermediate material in the rare earth industry. Benefiting from its high chemical activity, stable thermal decomposition performance and ultra-high conversion purity, it plays a core role in the preparation of yttrium oxide derivatives, optoelectronic phosphors, advanced ceramics and rare earth catalysts. We supply high-quality Yttrium Hydroxide with stable supply capacity, competitive pricing and strict quality control, providing professional and customized rare earth material solutions for global industrial manufacturers and scientific research institutions.
