> Perfluoroisobutene is quite toxic with an LCt = 880 mg⋅min⋅m−3 (mice).[1] It is a Schedule 2 substance of the Chemical Weapons Convention.
I don't know about you but I try and keep my ricin away from my breakfast foods. It is however reassuring that it'll be degraded in the environment.
To cause Teflon to degrade you have to heat the pan to over 500F / 260C.
No one cooks at those temperatures, even ovens don't go so high. You basically have to forget the pan on a high flame for a long time.
And the toxic chemicals you get from overheating oil are far worse, somehow everyone forgets about those.
I’d say it’s pretty easy to get teflon to degrade at home.
Still, I like cooking on teflon.
And plenty of recipes are cooked at 450 degrees. I don't even believe there's a full-sized (i.e. not a toaster) oven that doesn't go to 500 degrees, but I'm willing to be corrected.
https://en.wikipedia.org/wiki/Polymer_fume_fever
https://en.wikipedia.org/wiki/Perfluoroisobutene
Although acutely toxic, this substance is not a persistent "forever chemical" because there are multiple mechanisms that rapidly degrade it in the environment:
https://pubchem.ncbi.nlm.nih.gov/compound/Perfluoroisobutyle...