Wood preservation facilities, copper azole : chapter H-4

4. Human Health Concerns

Tables 4 outline the possible human health effects that may result from exposure to CA-B solutions and their components. The possible human health effects are estimated from risk studies on copper azole solution and its components, copper amine solution (ethanolamine) and tebuconazole. Extensive reviews of the potential health effects of individual elements are provided in documents from Health Canada (10), the material safety data sheet (MSDS), the World Health Organization (11), the International Labour Organization (12), the United States Environmental Protection Agency (13), the American Conference of Governmental Industrial Hygienists (ACGIH) (14) and the Occupational Safety and Health Administration (15).

In the Wolman^® NB concentrate, the tebuconazole concentration is 0.37%. The manufacturer’s data supplied are based upon a pure tebuconazole product. Workers will generally only come into contact with the working solution, which is diluted to 0.3% to 3% total active ingredient, meaning only 0.011% to 0.11% of tebuconazole.