Disclosed is a process for reducing hexavalent chromium [Cr(VI)] in aqueous solutions to trivalent chromium [Cr(III)] by reacting a catalyzed hydrazine composition with the hexavalent chromium at a pH in the range from about 6.0 to about 8.0 to form an aqueous slurry of trivalent chromium compound, said catalyzed hydrazine composition comprising(a) a hydrazine compound,(b) at least 0.0005 parts by weight of a quinone compound per one part of hydrazine compound; and, preferably;(c) at least about 0.0005 parts by weight of an organometallic complex per part of hydrazine compound, said organometallic complex being the reaction product of:(i) a hydroxide selected from the group consisting of cobaltous hydroxide and manganous hydroxide; and(ii) at least one organic ligand selected from the group consisting of unsubstituted and substituted amino derivatives of carboxylic acids and salts thereof.The solid particles of trivalent chromium may then be separated from the aqueous solution by conventional means (e.g., filtration).