This palladium catalyst, also known as [1,2-Bis(diphenylphosphino)ethane]dichloropalladium(II), presents as a very pale yellow to yellow crystalline powder. Store under inert gas, at ambient temperatures and protected from moisture. This substance is moisture sensitive. [1,2-Bis(diphenylphosphino)ethane]palladium(II) Dichloride is incompatible with oxidizing agents. This chemical is harmful if swallowed, in contact with skin or if inhaled. It causes skin irritation as well as serious eye irritation.