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Cerium Phosphate (CePO₄) is a white, thermally stable powder celebrated for its role in high-temperature ceramics and flame-retardant systems. With a CAS number of 14647-20-6 and a molecular weight of 235.09 g/mol, this compound offers purity levels of 99.9%-99.99% (4N), featuring a melting point of 1950°C and excellent chemical resistance to acids and alkalis. Its unique combination of low thermal expansion and high refractive index makes it indispensable in electronic components and polymer additives.
1. Thermal Stability: Maintains structural integrity up to 1800°C, ideal for use in refractory ceramics and high-temperature insulation materials.
2. Electrical Insulation: High volume resistivity (≥10¹⁴ Ω·cm) at room temperature, suitable for dielectric layers in multilayer ceramic capacitors (MLCCs).
3. Flame Retardancy: Releases water vapor and forms a protective ceramic char layer during combustion, reducing heat release rate by 30% in polypropylene composites.
4. Controlled Crystallinity: Available in monoclinic and hexagonal phases, enabling customization for specific thermal and mechanical requirements.
5. Low Heavy Metal Content: Strict purification ensures lead, cadmium, and mercury levels <1 ppm, meeting global regulations for electronic and automotive applications.
• Ceramic Capacitors: Used as a dielectric material in MLCCs for high-frequency circuits, offering stable capacitance over a wide temperature range (-55°C to +125°C).
• Flame-Retardant Polymers: Added to engineering plastics (e.g., nylon, PBT) at 5-10% loading, achieving UL94 V-0 rating without compromising mechanical properties.
• Refractory Coatings: Sprayed onto furnace linings to protect against molten metal erosion, extending service life by 20% in aluminum smelting facilities.
• Optical Glass: Improves refractive index and Abbe number in precision lenses, reducing chromatic aberration for high-resolution imaging systems.
• Research & Development: Serves as a model compound for studying phosphate-based solid electrolytes in lithium-ion batteries, enabling fast ion conduction at room temperature.
Q: What is the mechanism for flame retardancy in Cerium Phosphate?
A: It acts as a char former and diluent, inhibiting the release of flammable gases and promoting the formation of a protective inorganic layer.
Q: Can it be used in microwave dielectric ceramics?
A: Yes, its low dielectric loss (tanδ < 0.001) makes it suitable for resonators in 5G communication devices operating at 24-40 GHz.
Q: How does particle size affect its performance in polymers?
A: Nanoscale particles (20-50 nm) offer better dispersion and flame-retardant efficiency, while micron-scale particles (1-5 μm) improve mechanical reinforcement.
Q: Is Cerium Phosphate compatible with halogen-free flame retardant systems?
A: Yes, it synergizes with magnesium hydroxide and aluminum trihydroxide to achieve halogen-free compliance in electrical and electronic equipment.
Q: What is the typical pH range for its chemical stability?
A: Stable in pH 2-12, making it suitable for both acidic and alkaline environments in industrial coatings and water treatment.
Cerium Phosphate (CePO₄) is a white, thermally stable powder celebrated for its role in high-temperature ceramics and flame-retardant systems. With a CAS number of 14647-20-6 and a molecular weight of 235.09 g/mol, this compound offers purity levels of 99.9%-99.99% (4N), featuring a melting point of 1950°C and excellent chemical resistance to acids and alkalis. Its unique combination of low thermal expansion and high refractive index makes it indispensable in electronic components and polymer additives.
1. Thermal Stability: Maintains structural integrity up to 1800°C, ideal for use in refractory ceramics and high-temperature insulation materials.
2. Electrical Insulation: High volume resistivity (≥10¹⁴ Ω·cm) at room temperature, suitable for dielectric layers in multilayer ceramic capacitors (MLCCs).
3. Flame Retardancy: Releases water vapor and forms a protective ceramic char layer during combustion, reducing heat release rate by 30% in polypropylene composites.
4. Controlled Crystallinity: Available in monoclinic and hexagonal phases, enabling customization for specific thermal and mechanical requirements.
5. Low Heavy Metal Content: Strict purification ensures lead, cadmium, and mercury levels <1 ppm, meeting global regulations for electronic and automotive applications.
• Ceramic Capacitors: Used as a dielectric material in MLCCs for high-frequency circuits, offering stable capacitance over a wide temperature range (-55°C to +125°C).
• Flame-Retardant Polymers: Added to engineering plastics (e.g., nylon, PBT) at 5-10% loading, achieving UL94 V-0 rating without compromising mechanical properties.
• Refractory Coatings: Sprayed onto furnace linings to protect against molten metal erosion, extending service life by 20% in aluminum smelting facilities.
• Optical Glass: Improves refractive index and Abbe number in precision lenses, reducing chromatic aberration for high-resolution imaging systems.
• Research & Development: Serves as a model compound for studying phosphate-based solid electrolytes in lithium-ion batteries, enabling fast ion conduction at room temperature.
Q: What is the mechanism for flame retardancy in Cerium Phosphate?
A: It acts as a char former and diluent, inhibiting the release of flammable gases and promoting the formation of a protective inorganic layer.
Q: Can it be used in microwave dielectric ceramics?
A: Yes, its low dielectric loss (tanδ < 0.001) makes it suitable for resonators in 5G communication devices operating at 24-40 GHz.
Q: How does particle size affect its performance in polymers?
A: Nanoscale particles (20-50 nm) offer better dispersion and flame-retardant efficiency, while micron-scale particles (1-5 μm) improve mechanical reinforcement.
Q: Is Cerium Phosphate compatible with halogen-free flame retardant systems?
A: Yes, it synergizes with magnesium hydroxide and aluminum trihydroxide to achieve halogen-free compliance in electrical and electronic equipment.
Q: What is the typical pH range for its chemical stability?
A: Stable in pH 2-12, making it suitable for both acidic and alkaline environments in industrial coatings and water treatment.
