This hydrogenation catalyst, also known as [1,1'-Bis(diphenylphosphino)ferrocene]dichloropalladium(II) Dichloromethane Adduct, presents as a yellow to deep yellow red crystalline powder. Take care to keep container tightly closed and stored in a cool and dark place at ambient temperatures. [1,1'-Bis(diphenylphosphino)ferrocene]palladium(II) Dichloride is incompatible with oxidizing agents and harmful if swallowed, in contact with skin, or if inhaled. This chemical causes skin irritation as well as serious eye irritation.