This hydrogenation catalyst, also known as Dimethylammonium Dichlorotri(μ-chloro)bis[(R)-(+)-2,2'-bis[di(3,5-xylyl)phosphino]-1,1'-binaphthyl]diruthenate(II), presents as a reddish yellow to deep yellow red crystalline powder. It is known to be insoluble in water. Take care to keep container tightly closed and in a cool and dark place. Store under inert gas and away from incompatible materials. This substance is both light sensitive and air sensitive. [NH2Me2][(RuCl((R)-xylbinap))2(mu-Cl)3] is known to be incompatible with oxidizing agents.