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Lanthanum Oxalate (La₂(C₂O₄)₃·10H₂O) is a white crystalline powder celebrated for its role as a high-purity precursor in rare-earth processing and heterogeneous catalysis. With a CAS number of 537-03-1 and a molecular weight of 663.90 g/mol (hydrated form), this compound offers purity levels of 99.9%-99.99% (4N), featuring low solubility in water (0.02 g/L at 25°C) and predictable thermal decomposition behavior. Its ability to selectively precipitate La³+ ions from mixed rare-earth solutions makes it a cornerstone in lanthanide separation technologies.
Selective Precipitation: Enables efficient separation of lanthanum from cerium, praseodymium, and neodymium in ore leachates, achieving purity boosts of 15-20% in single-stage processes.
Controlled Thermal Decomposition: Releases crystal water at 150-200°C and decomposes to La₂O₃ at 600-700°C, yielding a fine oxide powder with surface area up to 50 m²/g for catalytic applications.
Low Heavy Metal Content: Stringent purification ensures Fe, Pb, and Zn levels <5 ppm, meeting the strict requirements for use in pharmaceutical intermediates.
Flowable Particle Size: Uniform micron-scale particles (D50=10-15 μm) with low agglomeration, facilitating automated dosing in continuous manufacturing lines.
Stable Hydration State: Maintains ten crystal water molecules under ambient conditions (25°C, 50% RH), ensuring consistent stoichiometry for precise material synthesis.
Lanthanum is essential in the rare earth element (REE) separation industry, producing high-purity lanthanum oxide used for precision glass polishing, including LCD panels. Even trace impurities can lead to optical defects, making La₂O₃ a critical material for achieving superior surface smoothness and enhanced display clarity.
Lanthanum oxide serves as a key precursor in methanol synthesis catalysts. Its basic surface sites enhance CO₂ hydrogenation activity, improve overall catalyst efficiency, and support sustainable chemical production processes, contributing to higher conversion rates and lower energy consumption in industrial-scale catalytic reactions.
As a ceramic additive, lanthanum functions as a sintering aid in zirconia-based ceramics. It reduces densification temperature by approximately 100°C while improving fracture toughness, mechanical reliability, and long-term performance, making it particularly valuable for dental implants and advanced structural ceramic applications.
In research applications, lanthanum compounds act as model reagents in thermogravimetric analysis (TGA) and serve as precursors for lanthanum-doped barium titanate (BLT) capacitors. These materials are critical for high-frequency electronic circuits, enabling enhanced dielectric properties and improved signal performance.
Lanthanum-based materials are widely used in environmental remediation, particularly as supports for activated carbon in water treatment. They efficiently adsorb phosphate ions, reducing eutrophication risks in industrial wastewater and supporting sustainable management of freshwater ecosystems.
Q: Why is oxalate preferred over chloride for lanthanum separation?
A: Oxalate precipitation offers higher selectivity and lower sodium contamination, critical for producing electronics-grade lanthanum compounds.
Q: What is the optimal calcination time for complete oxide conversion?
A: Heating at 700°C for 3 hours in air ensures >99% conversion to La₂O₃, with residual carbon content <0.1%.
Q: Can it be used in aqueous-based synthesis without calcination?
A: Yes, when dissolved in nitric acid, it provides a clear La³+ solution for sol-gel processes to produce nanoscale oxide particles.
Q: How does humidity affect storage stability?
A: Store in airtight containers with desiccants; prolonged exposure to >60% RH may cause slight hydration layer growth but does not impact chemical reactivity.
Q: Is this product compliant with FDA regulations for medical applications?
A: Yes, 4N-grade products undergo additional testing for biocompatibility, with heavy metal levels far below allowable limits (Pb <1 ppb).
Lanthanum Oxalate (La₂(C₂O₄)₃·10H₂O) is a white crystalline powder celebrated for its role as a high-purity precursor in rare-earth processing and heterogeneous catalysis. With a CAS number of 537-03-1 and a molecular weight of 663.90 g/mol (hydrated form), this compound offers purity levels of 99.9%-99.99% (4N), featuring low solubility in water (0.02 g/L at 25°C) and predictable thermal decomposition behavior. Its ability to selectively precipitate La³+ ions from mixed rare-earth solutions makes it a cornerstone in lanthanide separation technologies.
Selective Precipitation: Enables efficient separation of lanthanum from cerium, praseodymium, and neodymium in ore leachates, achieving purity boosts of 15-20% in single-stage processes.
Controlled Thermal Decomposition: Releases crystal water at 150-200°C and decomposes to La₂O₃ at 600-700°C, yielding a fine oxide powder with surface area up to 50 m²/g for catalytic applications.
Low Heavy Metal Content: Stringent purification ensures Fe, Pb, and Zn levels <5 ppm, meeting the strict requirements for use in pharmaceutical intermediates.
Flowable Particle Size: Uniform micron-scale particles (D50=10-15 μm) with low agglomeration, facilitating automated dosing in continuous manufacturing lines.
Stable Hydration State: Maintains ten crystal water molecules under ambient conditions (25°C, 50% RH), ensuring consistent stoichiometry for precise material synthesis.
Lanthanum is essential in the rare earth element (REE) separation industry, producing high-purity lanthanum oxide used for precision glass polishing, including LCD panels. Even trace impurities can lead to optical defects, making La₂O₃ a critical material for achieving superior surface smoothness and enhanced display clarity.
Lanthanum oxide serves as a key precursor in methanol synthesis catalysts. Its basic surface sites enhance CO₂ hydrogenation activity, improve overall catalyst efficiency, and support sustainable chemical production processes, contributing to higher conversion rates and lower energy consumption in industrial-scale catalytic reactions.
As a ceramic additive, lanthanum functions as a sintering aid in zirconia-based ceramics. It reduces densification temperature by approximately 100°C while improving fracture toughness, mechanical reliability, and long-term performance, making it particularly valuable for dental implants and advanced structural ceramic applications.
In research applications, lanthanum compounds act as model reagents in thermogravimetric analysis (TGA) and serve as precursors for lanthanum-doped barium titanate (BLT) capacitors. These materials are critical for high-frequency electronic circuits, enabling enhanced dielectric properties and improved signal performance.
Lanthanum-based materials are widely used in environmental remediation, particularly as supports for activated carbon in water treatment. They efficiently adsorb phosphate ions, reducing eutrophication risks in industrial wastewater and supporting sustainable management of freshwater ecosystems.
Q: Why is oxalate preferred over chloride for lanthanum separation?
A: Oxalate precipitation offers higher selectivity and lower sodium contamination, critical for producing electronics-grade lanthanum compounds.
Q: What is the optimal calcination time for complete oxide conversion?
A: Heating at 700°C for 3 hours in air ensures >99% conversion to La₂O₃, with residual carbon content <0.1%.
Q: Can it be used in aqueous-based synthesis without calcination?
A: Yes, when dissolved in nitric acid, it provides a clear La³+ solution for sol-gel processes to produce nanoscale oxide particles.
Q: How does humidity affect storage stability?
A: Store in airtight containers with desiccants; prolonged exposure to >60% RH may cause slight hydration layer growth but does not impact chemical reactivity.
Q: Is this product compliant with FDA regulations for medical applications?
A: Yes, 4N-grade products undergo additional testing for biocompatibility, with heavy metal levels far below allowable limits (Pb <1 ppb).
