Palladium has the lowest density, the lowest melting point and the highest reactivity of all platinum group elements. The vast majority of palladium is used in exhaust emission catalytic converters and diesel particulate filters for the automotive industry.
Palladium (Pd)
| Compound | CAS Number | Formula | Metal Contain. approx. | Color |
|---|---|---|---|---|
| Palladium(II) acetate | 3375-31-3 | Pd(OAc)2 | 47 % | yellowish brown |
| Palladium(II) chloride | 7647-10-1 | PdCl2 | 60 % | brown |
| Palladium(II) nitrate hydrate | 10102-05-3 | Pd(NO3)2 · n H2O | 41 % | yellowish brown |
| Palladium(II) nitrate solution | 10102-05-3 | Pd(NO3)2 | up to 17 % | yellowish brown |
| Palladium(II) sulfate solution | 13566-03-5 | PdSO4 | up to 12 % | brown |
| Tetraamminepalladium(II) chloride “TPC Pd” | 13815-17-3 | [Pd(NH3)4]Cl2 | 42 % | yellow |
| Tetraamminepalladium(II) chloride solution “TPC Pd” | 13815-17-3 | [Pd(NH3)4]Cl2 | up to 10 % | yellow |
| Tetraamminepalladium(II) hydrogencarbonate “TPHC Pd” | 134620-00-1 | [Pd(NH3)4](HCO3)2 | 35 % | cream |