Potassium hexachloroplatinate

Dikaliumhexachloroplatinat

Yellow to orange-yellow odorless solid

Fixed

3.50 g · cm -3

250 ° C ( decomposition)

• Soluble in hot water (52 g · l-1 at 100 ° C)
• Slightly soluble in cold water
• Practically insoluble in ethanol

1.825 (20 ° C)

Risk

195 mg · kg -1 ( LD50, rat, oral)

Template: Infobox chemical / molecular formula search available

Potassium hexachloroplatinate (IV) is a chemical compound from the group of Hexachloridoplatinate.

Production and representation

Potassium hexachloroplatinate ( IV), (IV ) chloride with potassium chloride are obtained by reaction of a weak hydrochloric acid Hexachloroplatinum (IV ) acid solution or platinum.

Properties

Potassium hexachloroplatinate (IV ) is a hygroscopic yellow odorless solid that is slightly soluble in cold water. He is in the form of bright yellow octahedra. Discoloration by yellow ocher and reddish yellow indicates the presence of iridium, palladium and Ru. Even small impurities of Rh evoke a green -yellow to green tint. The compound has a cubic crystal structure with a space group Fm3m.

It decomposes when heated, reacts with potassium hydroxide to Platinhydroxidkomplexen and is reduced by copper ( I) chloride to potassium tetrachloroplatinate (II).

Use

Potassium hexachloroplatinate (IV) for the preparation of other chemical compounds (such as the drug Ormaplatin ) and used in photography.

The connection can be used (with some restrictions ) for the detection of potassium.

Moreover, the compound is used as a standard for the platinum-cobalt color number.