Direkt zum Inhalt
Merck
Alle Fotos(2)

Key Documents

View All Documentation

204218

Sigma-Aldrich

Rhodium

powder, 99.95% trace metals basis

Anmeldenzur Ansicht organisationsspezifischer und vertraglich vereinbarter Preise
Alle Fotos(2)

About This Item

Empirische Formel (Hill-System):
Rh
CAS-Nummer:
7440-16-6
Molekulargewicht:
102.91
EG-Nummer:
231-125-0
MDL-Nummer:
MFCD00011201
UNSPSC-Code:
12141738
PubChem Substanz-ID:
24852239
NACRES:
NA.23

Qualitätsniveau

100

Assay

99.95% trace metals basis

Form

powder

Widerstandsfähigkeit

4.33 μΩ-cm, 20°C

bp

3727 °C (lit.)

mp (Schmelzpunkt)

1966 °C (lit.)

Dichte

12.41 g/cm3 (lit.)

SMILES String

[Rh]

InChI

1S/Rh

InChIKey

MHOVAHRLVXNVSD-UHFFFAOYSA-N

Suchen Sie nach ähnlichen Produkten? Aufrufen Leitfaden zum Produktvergleich

Allgemeine Beschreibung

Rhodium is one of the rarest metals from the platinum group, found in very small quantities in the earth′s crust (0.2 parts per billion). Rhodium’s chemical properties are related to its unusual ground state valence electron configuration in which it has only one electron in its outermost s orbital. This electron configuration has important implications for its catalytic ability, which has made rhodium useful in catalytic converters for automobiles. At the same time, metallic rhodium is a noble metal, meaning it has outstanding resistance to oxidation.

The powder form of rhodium is a silvery-grey and is used not just in the auto industry, but also in other areas like chemical synthesis and powder metallurgy. Rhodium is harder and melts at higher temperatures than both platinum and palladium, which makes it’s a useful hardening element in alloys. Additionally, it is popular for coating jewelry and other items because it gives a shiny, protective layer that does not easily wear away.

Anwendung

Rhodium can be used in the following applications:
  • Rh supported on activated carbon (Rh/C) can be used as an efficient oxygen reduction reaction catalyst for the fabrication of microbial fuel cells.
  • Used as a catalyst in the hydrosilylation of aromatic nitriles to N, N-disilylamines.
  • Used to prepare Rhodium-Iridium alloy.

Lagerklassenschlüssel

4.1B - Flammable solid hazardous materials

WGK

nwg

Flammpunkt (°F)

Not applicable

Flammpunkt (°C)

Not applicable

Persönliche Schutzausrüstung

Eyeshields, Gloves, type P3 (EN 143) respirator cartridges

Hier finden Sie alle aktuellen Versionen:

Analysenzertifikate (COA)

Lot/Batch Number
MKCQ0506
MKCP6780
MKCP1979
MKCN7851

Die passende Version wird nicht angezeigt?

Wenn Sie eine bestimmte Version benötigen, können Sie anhand der Lot- oder Chargennummer nach einem spezifischen Zertifikat suchen.

Suche nach COA

Besitzen Sie dieses Produkt bereits?

In der Dokumentenbibliothek finden Sie die Dokumentation zu den Produkten, die Sie kürzlich erworben haben.

Die Dokumentenbibliothek aufrufen

Kunden haben sich ebenfalls angesehen

Slide 1 of 4

1 of 4

Rhodium auf Tonerde extent of labeling: 5 wt. % loading, matrix alumina support, powder

Sigma-Aldrich

212857

Rhodium auf Tonerde

Platin powder, 99.995% trace metals basis

Sigma-Aldrich

204013

Platin

Osmium powder, 99.9% trace metals basis

Sigma-Aldrich

263257

Osmium

Rhodium auf Kohle extent of labeling: 5 wt. % loading

Sigma-Aldrich

206164

Rhodium auf Kohle

Stepan Chuprakov et al.
Journal of the American Chemical Society, 135(12), 4652-4655 (2013-03-13)
Readily available 1-mesyl-1,2,3-triazoles are efficiently converted into a variety of imidazolones and thiazoles by Rh(II)-catalyzed denitrogenative reactions with isocyanates and isothiocyanates, respectively. The proposed triazole-diazoimine equilibrium results in the formation of highly reactive azavinyl metal-carbenes, which react with heterocumulenes causing
Vutukuri Prakash Reddy et al.
Organic letters, 15(6), 1290-1293 (2013-02-28)
A straightforward and efficient method for the rhodium-catalyzed intermolecular oxidative cross-coupling of arenes and heteroarenes with thio- and selenophene derivatives (chalcogenophenes) via double C-H bond cleavage has been developed by using Cu(OAc)2/AgSbF6 as an oxidant. The reaction is applicable to
Brendan T Parr et al.
Journal of the American Chemical Society, 135(12), 4716-4718 (2013-03-13)
The synthesis of highly functionalized pyrroles has been achieved by reaction of rhodium-stabilized imino-carbenes with furans. The reaction features an initial [3+2] annulation to form bicyclic hemiaminals, followed by ring opening to generate trisubstituted pyrroles.
Simon Duttwyler et al.
Science (New York, N.Y.), 339(6120), 678-682 (2013-02-09)
Piperidines are prevalent in natural products and pharmaceutical agents and are important synthetic targets for drug discovery and development. We report on a methodology that provides highly substituted piperidine derivatives with regiochemistry selectively tunable by varying the strength of acid
Rh/Pd catalysis with chiral and achiral ligands: domino synthesis of aza-dihydrodibenzoxepines.
Adam A Friedman et al.
Angewandte Chemie (International ed. in English), 52(37), 9755-9758 (2013-07-23)
Alle zugehörigen Dokumente anzeigen

Artikel

Additive Manufacturing of Permanent Magnets

Permanent magnets are an essential technology for energy conversion. Motors and generators are used to convert energy between electrical and mechanical forms.

Unser Team von Wissenschaftlern verfügt über Erfahrung in allen Forschungsbereichen einschließlich Life Science, Materialwissenschaften, chemischer Synthese, Chromatographie, Analytik und vielen mehr..

Setzen Sie sich mit dem technischen Dienst in Verbindung.