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ITRC is starting a new team in January 2023 focused on 6PPD; an antiozonant and antioxidant chemical used to extend the life and safety of tires. A transformation product of 6PPD referred to as 6PPD-Quinone (6PPD-q) has been detected in roadway dust and stormwater runoff and was discovered to be acutely toxic to some aquatic organisms. This emerging contaminant team will be led by State experts from the Washington Department of Ecology and the California Department of Toxic Substance Control.
The goals of the 24-month team are to develop a series of fact sheets and online training materials to inform states, Tribal Nations, and the public of the use of 6PPD as a tire anti-degradant, as well as provide the latest science and health and ecological impacts of 6PPD-Q. Specific emphasis will also be placed on stormwater best management practices that could limit polluted roadway runoff from reaching waterways and aquatic organisms.
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