The State of California has adopted a rule that will require tiremakers to find a new alternative to a chemical that is currently in use that has been found to kill an endangered salmon species. 6PPD, a chemical that helps reduce tire cracking and extends the life of tires, has been added to California’s list of Priority Products, which identifies consumer products that contain chemicals that are potentially dangerous to people or the environment. Its inclusion means tire manufacturers will have until Nov. 30 to notify state regulators if they currently make tires that contain the chemical. … A link between coho [salmon] deaths and 6PPD was first discovered by scientists in the Pacific Northwest. California Native American tribes who rely on the fish have been among the most negatively impacted by the mass die-offs. 

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• Tire Technology International: California requires tire makers to evaluate alternative chemicals to improve public and environmental health
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