Platinum (Pt)

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.

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