Process of preparing hexaamminerhodium trihydroxide.

摘要

Disclosed is a process of preparing hexamminerhodium trihydroxide (HARhTH) which comprises forming a solution of hexaaminerhodium (III) chloride by means of a reaction between a solution of rhodium chloride (III) and an excessive amount of aqueous ammonia, heating the formed solution to make its pH weakly basic, and contacting the solution with anion exchange resin. No silver component is required in the present invention because of use of the anion exchange resin so that the silver ion never remains in the desired HARhTH.