An important application of platinum along with palladium and rhodium is the catalytic reduction of exhaust emissions from automobiles running on fuels. Here is use of mainly cylindrical converters based on ceramic cordierite (honeycombs) or on steel foil wound and soldered (metal support). Heraeus offers high-quality platinum chemicals for coating of emission catalysts.
Platinum (Pt)
| CAS Number | Formula | Metal Cont. approx. | Color | |
|---|---|---|---|---|
| 2-Hydroxyethylammonium hexahydroxoplatinate(IV) solution “Pt EA” | 68133-90-4 | (HOC2H4NH3)2[Pt(OH)6] | up to 12 % | pale yellow |
| Platinum(II) chloride | 10025-65-7 | PtCl2 | 73 % | light brown |
| Platinum(IV) chloride | 13454-96-1 | PtCl4 | 58 % | reddish brown |
| Platinum(II) nitrate | 18496-40-7 | Pt(NO3)2 | 58 % | orange brown |
| Platinum(II) nitrate solution | 18496-40-7 | Pt(NO3)2 | up to 30 % | orange brown |
| Tetraammineplatinum(II) chloride hydrate “TPC Pt” | 13933-32-9; 16971-49-6 | [Pt(NH3)4]Cl2 · n H2O | 55 % | yellowish |
| Tetraammineplatinum(II) chloride solution “TPC Pt” | 13933-32-9; 16971-49-6 | [Pt(NH3)4]Cl2 | up to 6 % | yellowish |
| Tetraammineplatinum(II) hydroxide solution “TPH Pt” | 38201-97-7 | [Pt(NH3)4](OH)2 | up to 10 % | colorless |
| Tetraammineplatinum(II) nitrate solution “TPN Pt” | 20634-12-2 | [Pt(NH3)4](NO3)2 | 3 % | pale yellow |
| Tetraammineplatinum(II) nitrate low pH solution “TPN Pt” | 20634-12-2 | [Pt(NH3)4](NO3)2 | up to 4 % | pale yellow |