Lutetium Fluoride[2]
Overview
Lutetium fluoride (LuF3) is an inorganic compound composed of lutetium and fluorine atoms. As a rare-earth fluoride, it exhibits unique properties such as high thermal stability and low solubility in water, making it valuable for specialized industrial applications. It is primarily synthesized through direct reaction of lutetium oxide (Lu2O3) with hydrofluoric acid (HF) or ammonium fluoride (NH4F). The compound’s purity (typically 99.9% or higher) determines its suitability for advanced uses like optical coatings or radiation detection.
Physical and Chemical Properties
LuF3 crystallizes in an orthorhombic structure with a high melting point of 1,182°C, indicative of its thermal resilience. Its density of 8.4 g/cm³ reflects the compact atomic arrangement of lutetium and fluorine ions. The compound is chemically inert under standard conditions but reacts with strong acids or alkalis at elevated temperatures. Its insolubility in water and most organic solvents makes it ideal for moisture-resistant applications, though hygroscopic impurities can affect performance.
Main Applications
In optics, LuF3 serves as a coating material for lenses and mirrors due to its transparency in UV and IR spectra. It reduces reflectance and enhances durability in harsh environments. Another critical use is in scintillation detectors, where its high density and atomic number improve gamma-ray absorption efficiency. The nuclear industry employs LuF3 as a neutron absorber or target material for isotope production. Emerging applications include solid-state lasers and luminescent materials.
Safety and Storage
LuF3 poses moderate health risks, requiring precautions against inhalation of dust or accidental ingestion. Proper PPE (gloves, goggles, respirators) is mandatory during handling. Storage demands airtight containers in low-humidity environments to prevent hydrolysis. Waste disposal must comply with local regulations for heavy metal fluorides. Spills should be neutralized with lime or calcium carbonate before cleanup.
B2B Procurement Guide
Procure LuF3 from specialized rare-earth chemical suppliers with ISO certifications. Key parameters include purity (e.g., 99.99% for optical grades), particle size (nanoscale for coatings vs. micron-scale for scintillators), and trace metal analysis. Bulk pricing varies significantly by quantity and specification. Sample testing is recommended to verify batch consistency. Lead times may extend due to limited production capacity, especially for high-purity grades.
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