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However the 6PPD used in tyres appears to be very toxic to some marine life and the tyre pollution gets washed off from the roads into rivers etc. It's the toxi
by ndsipa_pomu 1y ago
However the 6PPD used in tyres appears to be very toxic to some marine life and the tyre pollution gets washed off from the roads into rivers etc. It's the toxicity that's the issue.
Poisoning the oceans does not seem like a good strategy for the human race.
https://en.wikipedia.org/wiki/6PPD https://en.wikipedia.org/wiki/6PPD
- pjc50 1y agoProbably quite hard to detect the effects of that particular chemical underneath all the over-fishing, which is why the concern only appears when people are talking about EVs rather than back in the 1970s when it was introduced.
- ndsipa_pomu 1y agoThe actual issue is not with 6PPD itself, but when it oxidises to quinones. That transformation was only recognised in 2020, which is why people are only starting to measure and quantify its effects. It's definitely an issue with ICE and EVs, but is often brought up in EV discussions as people get the impression that EVs are "pollution free" due to their lack of exhaust emissions. Also, EVs tend to produce more tyre dust due to their slightly heavier weight and increased torque. Incidentally, a small Chinese study found 6PPD and 6PPDQ in human urine in low concentrations. We don't currently know what health effects, if any that may have.