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Rhodium is a chemical element with symbol Rh and atomic number 45. Rhodium is a noble metal, resistant to corrosion, found in platinum or nickel ores together with the other members of the platinum group metals.
R 8916 (OTTO) Rhodium ingots, 99.99% Cas 7440-16-6 - used as an alloying agent for hardening and improving the corrosion resistance of platinum and palladium.