Illinois Statutes Chapter 410. Public Health § 1/5. Addition of bittering agent required

§ 5. Addition of bittering agent required. Any engine coolant or antifreeze that is manufactured after January 1, 2011, and subsequently sold within the State, and that contains more than 10% ethylene glycol, shall include denatonium benzoate at a minimum of 30 parts per million and a maximum of 50 parts per million as a bittering agent within the product so as to render it unpalatable.