Linear Formula:

Rh2O3 / PtO2


(2N) 99% Rhodium-Platinum Oxide
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(2N5) 99.5% Rhodium-Platinum Oxide
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(3N) 99.9% Rhodium-Platinum Oxide
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(3N5) 99.95% Rhodium-Platinum Oxide
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(4N) 99.99% Rhodium-Platinum Oxide
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(5N) 99.999% Rhodium-Platinum Oxide
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Nishimura's Catalyst Properties (Theoretical)

Compound Formula Rh/Pt/O
Molecular Weight 227.09 (anhydrous) / 253.81 (hydrate)
Appearance Black powder
Melting Point N/A
Boiling Point N/A
Density N/A
Solubility in H2O N/A

Nishimura's Catalyst Health & Safety Information

Signal Word Warning
Hazard Statements N/A
Hazard Codes Xn, Xi
Risk Codes R20/21/22 R36/38
RTECS Number N/A
Transport Information N/A

About Nishimura's Catalyst

Rhodium Platinum Oxide (or Nishimura's Catalyst) is a precious metal catalyst used in the hydrogenation of aromatic compounds.

Nishimura's Catalyst Synonyms

Rhodium platinum oxide, Rh-Pt oxide, Pt-Rh oxide, Rhodium(III) oxide/Platinum(IV) oxide hydrate, O3Rh2/O2Pt, 39373-27-8, Nishimura catalyst 45% Rh / 19.5% Pt Powder, Wet

Chemical Identifiers

Linear Formula Rh2O3 / PtO2
MDL Number N/A
EC No. N/A
Pubchem CID 57485274
IUPAC Name oxoplatinum; rhodium

Packaging Specifications

Typical bulk packaging includes palletized plastic 5 gallon/25 kg. pails, fiber and steel drums to 1 ton super sacks in full container (FCL) or truck load (T/L) quantities. Research and sample quantities and hygroscopic, oxidizing or other air sensitive materials may be packaged under argon or vacuum. Shipping documentation includes a Certificate of Analysis and Safety Data Sheet (SDS). Solutions are packaged in polypropylene, plastic or glass jars up to palletized 440 gallon liquid totes, and 36,000 lb. tanker trucks.

Related Elements


See more Platinum products. Platinum (atomic symbol: Pt, atomic number: 78) is a Block D, Group 10, Period 6 element with an atomic weight of 195.084. The number of electrons in each of platinum's shells is [2, 8, 18, 32, 17, 1] and its electron configuration is [Xe] 4f14 5d9 6s1. The platinum atom has a radius of 139 pm and a Van der Waals radius of 175 pm. Platinum Bohr ModelElemental PlatinumPlatinum was discovered and first isolated by Antonio de Ulloa in 1735. It is one of the rarest elements in the earth's crust, occurring at a concentration of only 0.005 ppm. Platinum is found uncombined as a free element and alloyed with iridium as platiniridium. In its elemental form, platinum has a grayish white appearance. It is highly resistant to corrosion: the metal does not oxidize in air at any temperature. It is generally non-reactive, even at high temperatures. The origin of the name "platinum" comes from the Spanish word platina, meaning silver.


See more Rhodium products. Rhodium (atomic symbol: Rh, atomic number: 45) is a Block D, Group 9, Period 5 element with an atomic weight of 102.90550. Rhodium Bohr ModelThe number of electrons in each of Rhodium's shells is [2, 8, 18, 16, 1] and its electron configuration is [Kr] 4d8 5s1. The rhodium atom has a radius of 134 pm and a Van der Waals radius of 195 pm. Rhodium was discovered and first isolated by William Wollaston in 1804. In its elemental form, rhodium has a silvery white metallic appearance. Elemental RhodiumRhodium is a member of the platinum group of metals. It has a higher melting point than platinum, but a lower density. Rhodium is found in ores mixed with other metals such as palladium, silver, platinum, and gold. Rhodium is primarily used as the catalyst in the three-way catalytic converters of automobiles it is also highly valued in jewelry. The name Rhodium originates from the Greek word 'Rhodon,' which means rose.

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