99.95% High Quality OEM Brand Rhodium Ingot and Powder Precious Metal Bulk Export Supply

Key Specifications for Rhodium Powder 

• Purity: Commonly available in 99.9%
• 99.9%
• (3N) to 99.99%
• 99.99%
• (4N) trace metals basis.
• Physical Form: Grey to black powder.
• Particle Size (APS): Typically <50 μmis less than 50 mu m
• <50 𝜇m
• or -325 mesh
• −325 mesh
• .
• Density: 12.41 g/cm3
• 12.41 g/cm3
• .
• Melting Point: 1966∘C
• 1966∘C
• (approx. 3571∘F
• 3571∘F
• ).
• Boiling Point: 3727∘C±100∘C
• 3727∘C±100∘C
• .
• Solubility: Insoluble in water; slightly soluble in aqua regia, but highly resistant to corrosion.
• Electrical Properties: Resistivity of 4.33 𝜇Ω-cm
• 4.33 𝜇Ω-cm
• at 20∘C
• 20∘C

Common Applications 

• Catalysts: Used extensively in automotive catalytic converters to reduce emissions (NOx, CO).
• Chemical Production: Utilized in hydrogenation, oxidation, and carbonylation processes.
• Plating & Coating: Used for high-reflectivity, tarnish-resistant, and durable finishes in electronics and jewelry.
• High-Temperature Equipment: Used in thermocouples and, when alloyed with platinum, for specialized equipment. 

Safety and Handling 

Rhodium powder is generally inert but can form rhodium oxide at high temperatures in air. It should be stored in a cool, dry place, typically under an inert atmosphere. It may cause irritation upon exposure.