Potassium tetrachloropalladate(II) (K₂PdCl₄) is an inorganic compound, a coordination compound of palladium metal.

Some properties:

Appearance: red-brown crystalline powder;
Molar mass: 326.43 g/mol;
Density: 2.67 g/cm³;
Melting point: 525 °C;
Poorly soluble in water;
Does not form crystal hydrates.
Applications:

Chemical industry: used as a catalyst in various reactions.
Electronics: used in the production of materials for semiconductors.
Industry: used to create polymers with metal complexes.
Hazard class: 8 (corrosive substances). On contact may cause irritation to skin, eyes, and respiratory tract.
Preparation: passing chlorine through a suspension of palladium black in a concentrated solution of potassium chloride.

CAS registration number: 10025-98-6.