Vehicle tires contain the chemical 6PPD, which helps prevent degradation and cracking of rubber compounds. When 6PPD reacts with ozone in the air, it forms a transformation product called 6PPD-quinone, which has been shown to exhibit acute toxicity toward some aquatic life, including coho salmon.
EPA has developed an agencywide 6PPD/6PPD-quinone Action Plan that will focus and coordinate activities across EPA’s programs to provide support in 3 areas:
- Efforts to increase understanding of 6PPD-quinone through research, information gathering, and outreach.
- Efforts of states, Tribes, and territories to reduce the impacts of 6PPD-quinone.
Innovation of effective interventions and alternatives that incorporate the best available science.
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