Ruthenium trichloride (RuCl3), also known as ruthenium(III) chloride, is a black crystalline powder. The product itself is non-combustible and chemically stable at room temperature and pressure. It releases toxic gases upon high-temperature decomposition and has corrosive properties. It finds widespread applications as a spectrally pure reagent, in the chlor-alkali industry for metal anode ruthenium coatings, and as a hydrogenation catalyst due to its good electrochemical performance and high specific capacitance.