Ok obviously its not deadly, but it seems like it couldn’t be good for you.
Like say you boil water and then put it in the freezer, you use an empty two liter soda bottle and the scalding hot water warps and shrinks the bottle to almost half its original size. Has anything leeched into that water from the bottle?
Yea I know a HDPE bottle won’t warp so easily.
PET can leach antimony, especially when heated (antimony is used as a catalyst in the production of PET plastic); this study says higher temperatures increase the amount of leaching (but none of the bottles tested exceeded limits) and at 85C it would take 1.3 days to reach the federal limit (less if the water was boiling, but it doesn’t stay that hot for long). Also, there isn’t as much evidence, but PET has been said to leach phthalates (endocrine disruptors, although the form used in PET isn’t supposed to be the same as the kind used to soften plastic, nor would there be any used in a hard plastic bottle). There isn’t any BPA however.