ammonium hydroxide; perchloric acid T=0°C; 80 h; Yield given. Yields of byproduct given;

chromium (II) perchlorate; 2-[Bis(2-hydroxyethyl)imino]-2-(hydroxymethyl)-1,3- propanediol Hydrochloride; tris(hydroxymethyl)methylamine hydrochloride in methanol 12 h; Ambient temperature;