The use of flame retardants in auto interior seats pollutes the air in car cabins with the highly toxic chemicals, putting those who spend significant time in cars at the most risk, peer-reviewed research in the US has found.

Flame retardants are added to seat foam to meet regulations the US National Highway Traffic Safety Administration implemented in the 1970s that require automakers to include flame retardants to prevent the ignition and spreading of fires.

But the chemicals’ effectiveness was overstated at the time, and their toxicity was not understood. Flame retardants do “little to prevent fires for most uses and instead makes the blazes smokier and more toxic for victims, and especially for first responders”, said Patrick Morrison, director of the International Association of Fire Fighters’ safety division.

Most also showed organophosphate ester flame retardants, which in children are thought to cause asthma, early growth, adiposity and brain damage. Meanwhile, two of the chemicals are listed as California Proposition 65 carcinogens, and people with the highest levels of some flame retardants in their blood have about four times the risk of dying from cancer.

The average US child has lost three to five IQ points from exposure to one flame retardant used in cars and furniture, epidemiological studies have shown.

  • itsonlygeorge@reddthat.com
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    6 months ago

    The average US child has lost three to five IQ points from exposure to one flame retardant used in cars and furniture, have shown.

  • Thrashy@lemmy.world
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    6 months ago

    Here’s a direct link to the study. Of note is that there wasn’t a significant trend in detected levels by year (odd, since you’d expect the amount off-gassed to decline over time), but that electric cars in the study had ~10 times lower levels of the chemicals being studied. The authors note that this may be more an effect of vehicle brand since most of the electric cars in the study were from one unnamed manufacturer (probably Tesla?) but it suggests that even within the current regulations there are ways to reduce exposure.

    I’d like to see the scatter plot for detected levels by year of manufacture, and maybe it’d be good to extend the study’s coverage of vehicle age a bit further, because the lack of a noticeable trend doesn’t jive with my intuitive sense of what ought to be happening. That said, it’s a reasonably solid study, I think.

    • Flying Squid@lemmy.world
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      6 months ago

      Videos of Teslas bursting into flames with fires unable to be put out makes me wonder if maybe they went too far in the other direction though…

      • Thrashy@lemmy.world
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        6 months ago

        As fun as it is to dunk on Elmo I think we both know it’s not the seat foam that’s the problem there. 😅

        I’m actually right now in the process of developing design criteria for a battery testing lab, and as part of that I had to do a hazardous materials analysis. Lithium as it is in batteries is considered a water-reactive chemical, and the code only allows you to have ten pounds of it in a building before you’re pushed into a special hazardous occupancy type with lots of extra fire and explosion precautions required. I ran the numbers and figured out that’s about 8000 of your typical cylindrical cells – which is right about the number of cells in a Model S. And in a Model S, you’re just kinda… sittin’ on 'em. Fun thought…

  • dan1101@lemm.ee
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    6 months ago

    This has also been a problem in things like children’s pajamas. Unless that has been outlawed I doubt the industry fixed it.

    • girlfreddy@lemmy.caOP
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      6 months ago

      Yup. And afaik it’s still a rule.

      People wonder why all of the water is contaminated with PFAS/OS? It’s because for decades children’s pj’s have been soaked in fire retardant chemicals which, ofc, start coming out when the clothing is washed.

    • MrPoopbutt@lemmy.world
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      6 months ago

      The new car smell used to be from the material the dash was made of. Now, the dashes are made differently and the smell is pumped in because people expect it.