Uses Preparation
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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
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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)
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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
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Hazard and Precautionary Statements (GHS)

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N-Bromosuccinimide Price

Sigma-Aldrich
Product number
204226
Product name
Rhodium(III) oxide
Purity
99.8%
Packaging
500mg
Price
$275
Updated
2021/12/16
Sigma-Aldrich
Product number
204226
Product name
Rhodium(III) oxide
Purity
99.8%
Packaging
1g
Price
$476
Updated
2021/12/16
Alfa Aesar
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
Alfa Aesar
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
Strem Chemicals
Product number
45-1865
Product name
Rhodium(III) oxide, anhydrous (99.9%-Rh)
Packaging
2g
Price
$1597
Updated
2021/12/16
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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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Rhodium oxide Suppliers

Shanghai TuoSi chemical co., LTD
Tel
021-50920725 15317121217
Fax
021-50920221
Email
2885676282@qq.com
Country
China
ProdList
93
Advantage
58
J & K SCIENTIFIC LTD.
Tel
010-82848833 400-666-7788
Fax
86-10-82849933
Email
jkinfo@jkchemical.com
Country
China
ProdList
96815
Advantage
76
Meryer (Shanghai) Chemical Technology Co., Ltd.
Tel
18621169121
Fax
86-21-61259102
Email
market03@meryer.com
Country
China
ProdList
40310
Advantage
62
Alfa Aesar
Tel
400-6106006
Fax
021-67582001/03/05
Email
saleschina@alfa-asia.com
Country
China
ProdList
30159
Advantage
84
BeiJing Hwrk Chemicals Limted
Tel
0757-86329057 18516978288
Fax
010-89508210
Email
sales.gd@hwrkchemical.com
Country
China
ProdList
17295
Advantage
55
Shanghai Hanhong Scientific Co.,Ltd.
Tel
021-54306202
Email
jerry.ma@hanhonggroup.com
Country
China
ProdList
43059
Advantage
64
Chengdu XiYa Chemical Technology Co., Ltd.
Tel
400-9903999
Fax
0539-6365991
Email
sale@xiyashiji.com
Country
China
ProdList
10078
Advantage
57
BEST-REAGENT
Tel
400-1166196 18981987031
Email
cdhxsj@163.com
Country
China
ProdList
11755
Advantage
57
Spectrum Chemical Manufacturing Corp.
Tel
021-67601398-809 15221380277
Fax
021-57711696
Email
marketing_china@spectrumchemical.com
Country
China
ProdList
9686
Advantage
60
Chengdu Ai Keda Chemical Technology Co., Ltd.
Tel
028-86757656 18080918076
Fax
028-86757656
Email
800078821@qq.com
Country
China
ProdList
9750
Advantage
55
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View Lastest Price from Rhodium oxide manufacturers

Career Henan Chemical Co
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

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