Rhodium oxide
Uses Preparation- Product Name
- Rhodium oxide
- CAS No.
- 12036-35-0
- Chemical Name
- Rhodium oxide
- Synonyms
- rhodium oxide;RHODIUM(+3)OXIDE;Rhodium trioxide;RHODIUM(III) OXIDE;Dirhodium trioxide;RHODIUM SESQUIOXIDE;Hodium trihydroxide;Rhodium oxide (Rh2O3);RHODIUM OXIDE ANDYDROUS;RHODIUM(III) OXIDE, 99.8%
- CBNumber
- CB3114692
- Molecular Formula
- H2ORh
- Formula Weight
- 120.92
- MOL File
- 12036-35-0.mol
Rhodium oxide Property
- Melting point:
- 1100°C (dec.)
- Density
- 8.2 g/mL at 25 °C(lit.)
- storage temp.
- under inert gas (nitrogen or Argon) at 2-8°C
- form
- Powder
- color
- Yellow
- Specific Gravity
- 8.2
- Water Solubility
- Insoluble in water, acetone, conc. Hydrochloric acid, Nitric acid, Aqua regia.
- Sensitive
- Hygroscopic
- InChIKey
- XBBXDTCPEWHXKL-UHFFFAOYSA-N
- CAS DataBase Reference
- 12036-35-0(CAS DataBase Reference)
- EPA Substance Registry System
- Rhodium oxide (Rh2O3) (12036-35-0)
Safety
- Hazard Codes
- O;Xi,Xi,O
- Risk Statements
- 36/38-8
- Safety Statements
- 22-24/25-37/39-26-17
- RIDADR
- 3288
- WGK Germany
- 3
- TSCA
- Yes
- HazardClass
- 6.1(b)
- PackingGroup
- III
- HS Code
- 28259085
N-Bromosuccinimide Price
- Product number
- 204226
- Product name
- Rhodium(III) oxide
- Purity
- 99.8%
- Packaging
- 500mg
- Price
- $275
- Updated
- 2021/12/16
- Product number
- 204226
- Product name
- Rhodium(III) oxide
- Purity
- 99.8%
- Packaging
- 1g
- Price
- $476
- Updated
- 2021/12/16
- Product number
- 011814
- Product name
- Rhodium(III) oxide, anhydrous, 99.9% (metals basis), Rh 80.6% min
- Packaging
- 0.5g
- Price
- $274
- Updated
- 2021/12/16
- Product number
- 011814
- Product name
- Rhodium(III) oxide, anhydrous, 99.9% (metals basis), Rh 80.6% min
- Packaging
- 2g
- Price
- $928
- Updated
- 2021/12/16
- Product number
- 45-1865
- Product name
- Rhodium(III) oxide, anhydrous (99.9%-Rh)
- Packaging
- 2g
- Price
- $1597
- Updated
- 2021/12/16
Rhodium oxide Chemical Properties,Usage,Production
Uses
Rh2O3 is used to make rhodium metal and its various salts. Also, the oxide is a catalyst for hydrogenation.
Preparation
Rhodium sesquioxide is obtained by heating rhodium metal to red heat in air.
4Rh + 3O2 → 2Rh2O3
Alternatively, Rh2O3 may be prepared by igniting rhodium nitrate, Rh(NO3)3.
Treating the sesquioxide with alkali first forms a yellow precipitate of pentahydrate, Rh2O3•5H2O, soluble in acid and excess alkali. In excess alkali a black precipitate of trihydrate, Rh2O3•3H2O is obtained. The trihydrate is insoluble in acids.
Chemical Properties
Rhodium oxide is YELLOW POWDER
Physical properties
Gray crystalline solid or amorphous powder; corundum-type structure; density 8.20 g/cm3; decomposes at about 1,100 to 1,150°C; insoluble in water, acids, or aqua regia.
The pentahydrate Rh2O3?5H2O is a yellow precipitate; soluble in acids; partially dissolves in hot water; ignites to form anhydrous oxide.
The trihydrate Rh2O3?3H2O is a black precipitate; insoluble in acids.
Uses
RH2o3 is used to make rhodium metal and its various salts. Also, the oxide is a catalyst for hydrogenation.
Uses
Use in the catalytic converters of automobiles. It is also used as an industrial catalyst in the manufacturing of chemical intermediates such as oxo-alcohols, as well as nitric acid and ethanoic (acetic) acid production. It is also an area of interest for new capacitor electrode material researchers, dynamic random access memory (DRAMs) and non volatile random access memories (FeRAMs) makers.
Production Methods
Rhodium(III) oxide, Rh2O3, can be prepared by heating the finely divided metal or its nitrate in air or O2. The rhodium(IV) oxide is also known. Rhodium trihydroxide may be precipitated as a yellow compound by adding the stoichiometric amount of KOH to a solution of RhCl3. The hydroxide is soluble in acids and excess base. When the freshly precipitated Rh(OH)3 is dissolved in HCl at a controlled pH, a yellow solution is first obtained in which the aquochloro complex of Rh behaves as a cation.
Rhodium oxide Preparation Products And Raw materials
Raw materials
Preparation Products
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View Lastest Price from Rhodium oxide manufacturers
- Product
- Rhodium oxide 12036-35-0
- Price
- US $1.00/kg
- Min. Order
- 1kg
- Purity
- 95%-99%
- Supply Ability
- 100kg
- Release date
- 2018-12-22