Lady's HumanThe MSDS for ethoxyquin lists and LD-50 at 800mg/Kg acute oral toxicity. For such a "dangerous" product that is an unusually high LD-50. THe MSDS also lists no known carcinogenic effects, just contact irritation.
MSDS can vary from manufacturer to Manufacturer. Some also Say "Ethoxyquin may be harmful by ingestion and through skin contact, and "is" a skin and eye irritant. If anyone is really searching for a good dog food here is a catolog that will tell you everything (ingredient) that is in the product.
http://www.solidgoldhealth.com/catalogue/catDog.pdf