Overview
Yttrium hydroxide (Y(OH)₃) is an inorganic compound primarily used in high-purity applications such as advanced ceramics and electronics. As an analytical reagent-grade material, it meets stringent purity standards, typically ≥99.9%, making it suitable for research and industrial processes requiring precise chemical composition. Its production involves the reaction of yttrium salts with alkaline solutions, followed by purification to remove impurities. The compound’s stability under high temperatures and its reactivity with acids make it a versatile intermediate in synthesizing other yttrium-based materials.
Physical and Chemical Properties
Yttrium hydroxide appears as a fine white powder with a density of 4.01 g/cm³. It decomposes at around 300°C, releasing water to form yttrium oxide (Y₂O₃). Unlike many hydroxides, it is insoluble in water but dissolves readily in mineral acids like hydrochloric or nitric acid, forming corresponding yttrium salts. The compound exhibits high thermal stability, which is critical for applications in high-temperature environments, such as ceramic glazes or phosphor coatings. Its low solubility in water ensures minimal reactivity in aqueous systems unless acidic conditions are present.
Main Applications
In the ceramics industry, yttrium hydroxide serves as a precursor for yttrium-stabilized zirconia (YSZ), a material used in fuel cells and thermal barrier coatings. Its high purity is essential for ensuring the durability and performance of these components. Another key application is in phosphor manufacturing, where it acts as a host material for rare-earth dopants in LED and display technologies. Additionally, it is employed as a catalyst in organic synthesis and petroleum refining due to its ability to facilitate specific chemical reactions.
Safety and Storage
While yttrium hydroxide is not highly toxic, precautions are necessary to avoid inhalation or skin contact, which may cause irritation. Proper personal protective equipment (PPE), including gloves and masks, should be used during handling. Storage requires airtight containers to prevent moisture absorption, which can lead to clumping or degradation. The material should be kept in a cool, dry environment away from acids and other reactive substances to maintain its stability and shelf life.
B2B Procurement Guide
When procuring analytical reagent-grade yttrium hydroxide, prioritize suppliers with ISO certifications or equivalent quality assurances. Key specifications to verify include purity (≥99.9%), particle size distribution, and absence of heavy metal contaminants. Bulk purchases often reduce costs, but ensure packaging is moisture-resistant to preserve quality during transit. Request material safety data sheets (MSDS) and batch-specific certificates of analysis (CoA) to confirm compliance with industry standards.
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