- Alcohol & Hydroxybenzene & Ether[2]
- Other Organic Chemical[1]
- Catalyst[4]
- Chemical Auxiliary Agent[1]
- Chemical Reagents[10]
- Alkali[3]
- Inorganic Acids[10]
- Chloride[10]
- Nitrate[3]
- Other Inorganic Salts[3]
- Sulphate[8]
- Other Inorganic Chemicals[1]
- Organic Intermediate[1]
- Polymer[3]
- Water Treatment[1]
Chloroplatinic Acid AR
NAME:Chloroplatinic Acid AR
16941-12-1
Use:platinum plating and platinum catalyst,immortalization ink and platinum mirror.
Name: Chloroplatinic Acid AR
MF: H2PtCl6·6H2O
MW: 517.90
CAS: 18497-13-7
EINECS: 241-010-7
Brand name: WENDA
Physical and chemical property:
Density: 2.431 g/cm^3
Melting point: 60°C
appearance: red-brown crystals
Deliquescent. Soluble in water, ethanol, ethyl ether.
Content: Pt, %: ≥37.0%
Dangerous mark: T
Hazard class: R25;R34;R42/43
Safety instruction: S22;S26;S36/37/39;S45
UN 1789/2507
Storage: 50g/ 100g/ 250/ glass bottle.
Use: used for platinum plating and platinum catalyst, immortalization ink and platinum mirror and so on.
Applications
Potassium determinationChloroplatinic acid was popularized for the determination of potassium. The potassium is selectively precipitated as potassium chloroplatinate. Determinations were done in 85% (v/v) alcohol solutions with excess platinate ions, and the precipitated product was weighed. Potassium could be detected for solutions as dilute as 0.02 to 0.2% (m/v)
This method for determination of potassium was advantageous vs. the cobaltinitrite method used previously, since it required a single precipitation reaction.Today, the concentration of potassium is determined with an ion-selective electrode. These modern methods remain subject to interference.
Purification of platinum
Treatment with an ammonium salt, such as ammonium chloride, gives ammonium hexachloroplatinate,which is very insoluble in ammonium solutions. Heating the ammonium salt in hydrogen reduces it to elemental platinum. Platinum is often isolated from ores or recycled from residues thus.
CatalysisLike many platinum compounds, chloroplatinic acid is used in catalysis. This compound was first reported by John Speier and colleagues from Dow Corning Corporation to catalyze the reaction of silyl hydrides with olefins, hydrosilylation. Typical of his reactions, Speier used isopropanol solutions containing trichlorosilane (SiHCl3), and methyldichlorosilane (CH3HSiCl2), with pentenes. Prior work on the addition of silanes to alkenes required radical reactions that were inefficient. It is generally agreed that chloroplatinic acid is a catalyst precursor, and more recent discussions have considered a possible role for colloidal platinum or zero-valent complexes.[1
