Car tire chemicals are killing salmon and steelhead
![](https://calscientists.org/wp-content/uploads/2022/12/Salmon.jpg)
Car tire chemicals are killing salmon and steelhead – Environmental Health News
A new study has found that the chemical 6PPD, added to tires to prevent degradation, is causing a “complete breakdown of the blood-brain barrier” in fish. Meanwhile, the California Department of Toxic Substances Control is taking steps to designate it as a “priority product,” which would force companies to disclose their use of 6PPD and conduct analyses to find safer alternative chemicals.