Rhodium
ALDRICH/204218 - powder, 99.95% trace metals basis
CAS Number: 7440-16-6
Empirical Formula (Hill Notation): Rh
Molecular Weight: 102.91
EC Number: 231-125-0
MDL Number: MFCD00011201
Linear Formula: Rh
Product Type: Chemical
This picture is provided solely for illustration purposes. Optical properties of the actual product may deviate. Relevant product information is printed on labeled products and other accompanying or available information material. This image depicts SKU: 204218-1G
| assay | 99.95% trace metals basis |
| bp | 3727 °C (lit.) |
| density | 12.41 g/cm3 (lit.) |
| form | powder |
| InChI | 1S/Rh |
| InChI key | MHOVAHRLVXNVSD-UHFFFAOYSA |
| mp | 1966 °C (lit.) |
| Quality Level | 100  |
| resistivity | 4.33 μΩ-cm, 20°C |
| SMILES string | [Rh] |
| Application: | 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. |
| General description: | 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. |
| Packaging: | 1 g in glass bottle |
| Hazard Codes | F,Xi |
| Risk Statements | 11 |
| Safety Statements | 16-22-24/25 |
| RIDADR | UN 3089 4.1 / PGII |
| WGK Germany | nwg |
| Flash Point(F) | Not applicable |
| Flash Point(C) | Not applicable |
| Purity | 99.95% trace metals basis |
| bp | 3727 °C (lit.) |
| mp | 1966 °C (lit.) |
| Density | 12.41 g/cm3 (lit.) |
| UNSPSC | 12352300 |