Palladium chloride, with the chemical formula PdCl2, is a chemical compound that contains the metal palladium in its +2 oxidation state. It is a dark brown crystalline solid that is highly soluble in water and various organic solvents. Palladium chloride is an important compound in the field of catalysis and is used in various chemical reactions, particularly in the synthesis of organic compounds.

One of the key applications of palladium chloride is its use as a catalyst in organic synthesis. It is often employed in coupling reactions, such as the Heck reaction and Suzuki-Miyaura cross-coupling reaction, which are essential in the production of pharmaceuticals, agrochemicals, and fine chemicals. Palladium chloride plays a crucial role in promoting these reactions by facilitating the formation of carbon-carbon bonds. Additionally, it is used in the preparation of palladium catalysts supported on carbon or other materials. These catalysts find wide-ranging applications in the chemical industry.