| Formula / Notation | Rh |
|---|---|
| CAS Number | 7440-16-6 |
| Molecular Weight | 102.91 |
| Melting Point | 1964.0 |
| Boiling Point | 3695.0 |
| Density | 12.41 |
| Solubility | Insoluble in water |
| Appearance | Hard, lustrous, silvery-white metal |
| Also Known As | Rh, rhodium metal |
| Category | Elements |
What is Rhodium?
Rhodium is a hard, silvery-white platinum group metal, atomic number 45. One of the rarest and most expensive metals. Key component of catalytic converters in cars. Very high reflectivity makes it valuable for mirrors and jewellery plating.
Formula & Notation
IUPAC Name: Rhodium
Other Names / Synonyms: Rh, rhodium metal
Properties & Characteristics
Physical Data
| Property | Value |
|---|---|
| Melting Point | 1964.0 |
| Boiling Point | 3695.0 |
| Density | 12.41 |
| Molecular Weight | 102.91 |
| Solubility | Insoluble in water |
| Appearance | Hard, lustrous, silvery-white metal |
Uses & Applications
Safety Information
Always consult the SDS/MSDS before handling any chemical. This information is for educational purposes only.
Key Facts
Frequently Asked Questions
Rhodium is a hard, silvery-white platinum group metal, atomic number 45. One of the rarest and most expensive metals. Key component of catalytic converters in cars. Very high reflectivity makes it valuable for mirrors and jewellery plating.
Automotive catalytic converters (reduces NOx - most important use). Industrial catalysts (acetic acid production). Plating for jewellery and reflectors. Thermocouple alloys (Pt-Rh). Electrical contacts. High-temperature alloys.
Rhodium compounds: irritant to skin and eyes. Some rhodium salts reported as sensitisers. Rhodium metal: relatively low toxicity. Rh-106: radioactive fission product. Limited data on long-term exposure - handle with standard precautions.
The formula or notation for Rhodium is: Rh