Diamminedinitritoplatinum(II)
CAS 14286-02-3
P-salt is the standard halide-free platinum source for electroplating baths and catalyst manufacture — the workhorse precursor behind bright platinum deposits on connectors, sensors and jewelry, and chloride-sensitive supported catalysts.
Typical specification
| Molecular formula | Pt(NH₃)₂(NO₂)₂ |
|---|---|
| Molecular weight | 321.18 |
| Purity (metals basis) | ≥ 99.9% |
| Platinum content | ≥ 60.7% |
| Appearance | White to pale-yellow powder |
| Chloride | ≤ 50 ppm |
| Available forms | Solid or ammoniacal 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)₂(NO₂)₂ (P-salt) is used
Platinum electroplating
The classical bath chemistry for dense, adherent platinum deposits on electronic contacts, electrodes and decorative work — valued for halide-free operation and stable deposition rates.
Halide-free catalyst impregnation
Used to prepare supported Pt catalysts where residual chloride would poison downstream chemistry or corrode equipment, decomposing cleanly to metal on calcination.
Storage and shipping
Storage. Store sealed, cool and dry, away from acids, reducing agents and organics; nitrite-containing compound.
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
- P-salt
- Platinum P salt
- Diamminedinitroplatinum
- Pt(NH3)2(NO2)2
Frequently asked questions
How is pricing structured?
Quotes reference the day's metal fixing on assayed contained metal plus a stated conversion charge, and can be locked at order confirmation for recurring volumes.
Why choose P-salt over chloroplatinic acid?
P-salt is halide-free: plating baths run cleaner and supported catalysts avoid chloride poisoning. Where chloride is acceptable, chloroplatinic acid remains the cheaper route.
Do you take back spent material?
Yes — spent catalyst, residues and off-spec lots are assayed on receipt and the recovered metal credited against your next order, closing the loop on your metal inventory.