C 7704 (OTTO) Copper(II) acetylacetonate, 97% Cas 13395-16-9 - used as catalysts for polymerization of olefins and transesterification. C 7704 (OTTO) Copper(II) acetylacetonate, 97% Cas 13395-16-9 - used as curing agents for epoxy resins, acrylic adhesives and silicone rubbers.