In 1903 the chemical and dyestuff department was split off from the company and incorporated as H. A. Metz & Co., and the manufacture of color and chemicals as Consolidated Color and Chemical Co., with Metz as president. He also became president of H. A. Metz Laboratories, Inc., Ettrick Mills, Textileather Company, and New York and Hanseatic Corporation, a member of numerous chemical and industrial societies, and a director with a number of banks. In July 1926 his dyestuff interests were consolidated into the General Dyestuff Corporation, of which he became president.
Metz's chemical and dye interests were separated from the company in 1903, forming H. A. Metz & Co. and Consolidated Color and Chemical Co. He went on to lead various other ventures, including H. A. Metz Laboratories, Inc., Ettrick Mills, Textileather Company, and New York and Hanseatic Corporation.