Tetraamminedinitritoplatinum(II)
CAS 20634-12-2
Tetraamminedinitritoplatinum is a halide-free cationic platinum source used where chloride would poison a catalyst or corrode a substrate — the ammine chemistry behind chloride-free impregnation and specialty platinum plating.
Typical specification
| Molecular formula | [Pt(NH₃)₄](NO₂)₂ |
|---|---|
| Molecular weight | 355.22 |
| Purity (metals basis) | ≥ 99% |
| Platinum content | ≥ 54.5% |
| Appearance | Pale yellow to white crystalline powder |
| Chloride | ≤ 50 ppm |
| Forms | Solid or solution at specified Pt g/L |
| HS code (export) | 2843900039 |
Lot-specific COA issued with every shipment. SDS and ICP elemental impurity data available on request.
Where [Pt(NH₃)₄](NO₂)₂ is used
Chloride-free catalyst impregnation
The cationic tetraammine complex ion-exchanges onto zeolites and oxide supports, giving highly dispersed platinum without the chloride residues that sinter metal and corrode reactor internals.
Specialty platinum plating
Used in ammine-based plating electrolytes for dense platinum deposits on electrodes and electronic components where halide-free bath chemistry is specified.
Precursor to platinum ammine chemistry
A defined Pt(II) tetraammine source for preparing mixed-ligand platinum complexes and for platinum coordination chemistry research.
Storage and shipping
Storage. Store sealed, cool and dry, away from acids and reducing agents; nitrite-containing salt.
Shipping. Ships with SDS; transport classification confirmed per pack size due to nitrite content.
Packaging. 5 g · 25 g · 100 g · Solution grades by contained Pt weight
Synonyms
- Platinum tetraammine dinitrite
- [Pt(NH3)4](NO2)2
- Tetraammineplatinum(II) nitrite
- Halide-free platinum salt
Frequently asked questions
Why choose an ammine salt over chloroplatinic acid?
Ion exchange with the cationic tetraammine gives finer, more uniform platinum dispersion on acidic supports than anionic chloroplatinate, and it leaves no chloride to poison downstream chemistry.
How is pricing structured?
Quotes reference the day's platinum fixing on assayed contained metal plus a stated conversion charge, lockable at order confirmation.
What documentation is included?
Every lot ships with a certificate of analysis stating assayed metal content, plus an English SDS. ICP trace-metal panels are available on request.
Do you take back spent material?
Yes — residues, spent catalyst and off-spec lots are assayed on receipt and the recovered platinum credited against your next order.