What is Chloroplatinic acid

Chloroplatinic acid is also called Hexachloroplatinic acid. Chloroplatinic acid, is a reddish-brown solid. Chloroplatinic acid is soluble in water and will yield a mildly acidic solution. It is the chemical compound usually found as the hexahydrate. This compound was first reported by John Speier and colleagues from Dow Corning Corporation to catalyze the reaction of silyl hydrides with olefins, hydrosilylation. This is one of the most readily available soluble compounds of platinum. It may cause illness from inhalation of the dust and Chloroplatinic acid is irritating to skin and eyes.  The commercial product is the oxonium salt of the hexachloroplatinate(IV) anion. It is rarely obtained in the pure state.  When heated to high temperatures Chloroplatinic acid may decompose to toxic chloride fumes. Chloroplatinic acid may burn, but may be difficult to ignite.
Phisical and chemical properties:
CAS:16941-12-1 
Molecular formula: H2PtCl6
Molecular Weight:  409.81 g/mol
mp :  60 °C(lit.)
density :  2.43 g/mL at 25 °C(lit.)
refractive index :  n20/D 1.347
storage temp. :  2-8°C
solubility :  H2O: 0.5 M at 20 °C, clear, orange
form :  powder and chunks
color :  orange
Water Solubility :  soluble
Merck : 14,7526
Stability::  May decompose on exposure to light, air or moisture.
Chemical Properties Orange/Red Crystals
Air & Water Reactions, Soluble in water. Reactivity Profile
Application:
Chloroplatinic acid is mainly used for manufacturing indelible ink and in electroplating processes. Like many platinum compounds, chloroplatinic acid is used in catalysis.
Related compounds:
Chloroplatinic acid prepared from aqua regia is occasionally contaminated with (NO)2PtCl6. This species is obtained by the reaction of nitrosyl chloride and Pt metal.
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