Skip to content
LIFFEYCHEMICALS
AccountRequest quote
Platinum · Pt

Platinum salts

Platinum salts are where catalysts come from. Chloroplatinic acid impregnated onto alumina and reduced is the reforming and automotive catalyst; on carbon it is the fuel-cell electrocatalyst and the hydrogenation catalyst; dissolved in isopropanol it is Speier's hydrosilylation catalyst, the ancestor of every addition-cure silicone system; electrolysed with a trace of lead it platinises electrodes. Potassium tetrachloroplatinate(II) is the other half of the story, the starting point for cisplatin and the whole of square-planar platinum(II) chemistry, for Zeise's salt and PtCl₂(COD), and for platinum nanocrystals and platinum printing. Potassium and ammonium hexachloroplatinate are the stable, weighable platinum(IV) salts: the former for catalyst preparation and platinum standards, the latter the form in which platinum is purified and recovered, decomposing cleanly to platinum sponge on heating.

4 compoundsPt spot €46.710/g

Prices track live precious-metal spot rates. Price updated (Dublin time). Prices are locked when an order or quote is created.

Platinum37.7% Pt

Chloroplatinic acid hexahydrate

H2PtCl6·6H2O · CAS 18497-13-7
Respiratory sensitiser (H334)

Chloroplatinic acid hexahydrate is the standard platinum precursor for platinum catalysts (Adams' catalyst PtO2, Pt/C, Speier's and Karstedt's hydrosilylation catalysts), electroplating and platinising of electrodes, platinum nanoparticles and fuel-cell electrocatalysts. Like all soluble chloroplatinates it is a potent respiratory and skin sensitiser and must be handled in a fume hood with full containment of dust and aerosols. Each lot is supplied with a platinum assay and full certificate of analysis.

Grade
≥99.9% (metals basis); Pt ≈ 38%
Pack sizes
1 g, 5 g, 25 g
from €57.00 excl. VAT
View / request quote
Platinum40.1% Pt

Potassium hexachloroplatinate(IV)

K2PtCl6 · CAS 16921-30-5
Respiratory sensitiser (H334)

Potassium hexachloroplatinate(IV) is a yellow to orange crystalline platinum(IV) salt, sparingly soluble in water, used as a stable platinum precursor for supported Pt catalysts and fuel-cell electrocatalysts (Pt/C by reduction), platinum nanoparticles and sols, and as a defined platinum standard. It is the classical gravimetric form for potassium and a key intermediate in platinum refining. A respiratory and skin sensitiser: handle only with dust containment. Approximately 40% platinum by mass; each lot is assayed and ships with a certificate of analysis.

Grade
≥99.9% (metals basis); Pt ≈ 40%
Pack sizes
1 g, 5 g, 25 g
from €59.00 excl. VAT
View / request quote
Platinum47% Pt

Potassium tetrachloroplatinate(II)

K2PtCl4 · CAS 10025-99-7
Respiratory sensitiser (H334)

Potassium tetrachloroplatinate(II) is a ruby-red, water-soluble platinum(II) salt and the standard starting material for platinum(II) coordination chemistry: cisplatin and other platinum anticancer complexes, Zeise's salt, platinum phosphine and diimine complexes, platinum porphyrins and phosphorescent emitters. It is also used for platinum nanoparticles and shape-controlled nanocrystals, Pt/C catalysts and platinum plating baths. A respiratory and skin sensitiser: handle only with dust containment. Approximately 47% platinum by mass; supplied with a lot-specific assay.

Grade
≥99.9% (metals basis); Pt ≈ 47%
Pack sizes
1 g, 5 g, 25 g
from €65.00 excl. VAT
View / request quote
Platinum43.95% Pt

Ammonium hexachloroplatinate(IV)

(NH4)2PtCl6 · CAS 16919-58-7
Respiratory sensitiser (H334)

Ammonium hexachloroplatinate(IV) is a yellow to orange crystalline platinum(IV) salt, sparingly soluble in water, that decomposes cleanly on heating to platinum sponge, the classical route to high-purity platinum and platinum black. It is used to prepare supported platinum catalysts, fuel-cell electrocatalysts, platinum nanoparticles and platinum coatings, and as the platinum intermediate in refining and recovery. A respiratory and skin sensitiser: handle only with dust containment. Approximately 44% platinum by mass; each lot is assayed and released with a certificate of analysis.

Grade
≥99.9% (metals basis); Pt ≈ 44%
Pack sizes
1 g, 5 g, 25 g
from €62.00 excl. VAT
View / request quote

About our platinum salts

We make all four in Dublin from platinum refined by Liffey Metals, assay each lot for platinum by weight and issue a certificate of analysis with every shipment. Chloroplatinic acid is deliquescent and its water content varies, so the certificate assay, not the formula, defines what you have; the potassium and ammonium salts are not hygroscopic and their formula values are dependable.

The choice is usually dictated by the method: chloroplatinic acid for solutions and impregnations, potassium tetrachloroplatinate for platinum(II) synthesis, potassium hexachloroplatinate where a dry, exactly weighable platinum(IV) salt is wanted, and ammonium hexachloroplatinate for refining, recovery and alkali-free catalyst precursors.

Every soluble platinum salt is a respiratory sensitiser (H334) as well as a skin sensitiser: inhaled dust or mist can cause platinum salt allergy that becomes permanent, and the occupational exposure limit is 0.002 mg/m³ as platinum. We flag this on every product page, supply these compounds to trained professional users only, and recommend handling them exclusively in a fume hood. Chloroplatinic acid ships as a corrosive (UN2507, Class 8) and the three chloroplatinate salts as toxic solids (UN3288, Class 6.1). Prices follow the live platinum spot price and are quoted in EUR excluding VAT. Our guide to preparing a platinum plating bath covers platinising solutions and the P-salt, DNS and alkaline bright-platinum electrolytes.

Which platinum compound do I need?

For research and industrial use only. Not for human, veterinary, food or cosmetic use. Need a pack size, grade or platinum compound that is not listed? Request a quote and we will come back within one working day.

Message Liffey Chemicals on WhatsApp