Rhodium oxide

Catalog Number	ACM12036350-2
CAS	12036-35-0
Structure
Synonyms	Dirhodium trioxide
Molecular Weight	253.81
Molecular Formula	Rh2O3
Melting Point	1100 °C
Purity	99%+
Density	6.92 g/cm³
Appearance	Black powder
Application	RH₂O3 is used to make rhodium metal and its various salts. Also, the oxide is a catalyst for hydrogenation.
MDL Number	MFCD00011205

Q&A

What is the chemical formula of Rhodium oxide?

The chemical formula of Rhodium oxide is Rh2O3.

What are some synonyms for Rhodium oxide?

Some synonyms for Rhodium oxide include Dirhodium trioxide, RHODIUM SESQUIOXIDE, and RHODIUM(III) OXIDE.

What is the melting point of Rhodium oxide?

The melting point of Rhodium oxide is 1100°C (dec.).

Is Rhodium oxide soluble in water?

No, Rhodium oxide is insoluble in water.

What are some exposure limits for Rhodium oxide according to ACGIH and NIOSH?

ACGIH lists a TWA of 1 mg/m3, while NIOSH lists an IDLH of 100 mg/m3 and a TWA of 0.1 mg/m3 for Rhodium oxide.

How should Rhodium oxide be stored?

Rhodium oxide should be stored under inert gas (nitrogen or Argon) at 2-8°C.

What is the color of Rhodium oxide?

Rhodium oxide is yellow in color.

What are some uses of Rhodium oxide?

Rhodium oxide is used to make rhodium metal and its various salts. It is also used as a catalyst for hydrogenation.

How is Rhodium oxide prepared?

Rhodium oxide can be prepared by heating rhodium metal in air, or by igniting rhodium nitrate.

What are some physical properties of Rhodium oxide?

Rhodium oxide is a gray crystalline solid or amorphous powder with a corundum-type structure. It has a density of 8.20 g/cm3 and decomposes at about 1,100 to 1,150°C. It is insoluble in water, acids, or aqua regia.