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Avoid plastics. Any move away from BPA is merely rebranding. https://www.scientificamerican.com/article/bpa-free-plastic-containers-may-be-just-as-hazardous/ h

Avoid plastics. Any move away from BPA is merely rebranding. https://www.scientificamerican.com/article/bpa-free-plastic-containers-may-be-just-as-hazardous/ https://www.scientificamerican.com/article/bpa-free-plastic-...

James_Henry 7y ago
The article you linked is specifically about BPS. The article that you are commenting about is about TMBPF and how the move to TMBPF is not just rebranding but an rather transparent search for a plastic that works and is safe. I like the idea of avoiding plastic as possible, but saying "any move away from BPA is merely rebranding" is wrong and not helpful. This sort of alarmist comment is more likely to move people away from your point of view or at least give them incorrect ideas.
microcolonel 7y ago
> TMBPF had another apparent advantage. Manufacturers use two chemical steps to forge BPA into can linings. In the second stage, some BPA molecules don’t get incorporated into the polymer chains. Those strays are thought to account for most of the BPA that leaches from linings. Valspar chemists found a way to use TMBPF just once, early in the process, stanching the release of the unlinked molecules. The article is, at least somewhat, about their tetramethyl bisphenol F compound having a process advantage to bisphenol A which could reduce the leeching.
Polylactic_acid 7y ago
I wonder if there are any alternatives for sports drink bottles. Glass and metal bottles sound safest but you can't compress them to easily drink single handed.
- potiuper 7y ago
  Handle?
- grawprog 7y ago
  Apparently silicone ones exist: https://www.amazon.ca/Collapsible-Silicone-Water-Bottles-Camping/dp/B00UGQBTP8 https://www.amazon.ca/Collapsible-Silicone-Water-Bottles-Cam...
  - colordrops 7y ago
    Does silicone not leach? Isn't it a synthetic compound as well?
    - hanniabu 7y ago
      Is also be concerned about residual chemicals from the manufacturing process, and this goes for metal too. For example I'm sure the molds have release spray that can get passed into the bottle, same with stainless steel machine spray, oils, and greases. And the thing with metal containers is that it's slightly porous and the chemicals can permeate a bit which would then leach back into the water. Another concern is low grade recycled metals with previous chemical contact used to manufacture the bottles of produced in places like China.
      - serf 7y ago
        silicone doesn't require mold release on a nicely machined mold. If it IS required, such as with complex shapes, food-grade oils are used. I suppose you could get a newly machined mold that may have cutting oil or something impregnated in the metal, but i'm not sure how you'd avoid that anywhere ,really. (Just wash everything thoroughly when you receive it and buy from reputable dealers, that seems about as good as you can get.)
        hanniabu 7y ago
        food-grade oils should be* used And yes, I agree it's something that's a concern with everything and I hate that I can't ignore it and it's always at the back of my mind. I used to work in FDA related manufacturing and I know how things operate.
    - 7y ago
- a_imho 7y ago
  Never mind sport drinks, what about water? All sold in plastic bottles.
  - jbarberu 7y ago
    Tap water? There are filtration systems for those living where the tap water is not drinkable.
  - unhashable 7y ago
    Good mineral water is bottled in glass (and has beneficial minerals).
ip26 7y ago
And if you have no other (good) options, compromise by avoiding abuse (mechanical, heat, UV, harsh chemicals, acidic foods, dishwasher) and retiring the plastic early, 2-3 years. Also, while all plastics leech, HDPE/LDPE & PP appear to be the best choices if you're concerned about this. BPA, BPS, etc are added to polycarbonate. (In classic fashion, HDPE/LDPE & PP are the most boring of plastics)

James_Henry 7y ago

The article you linked is specifically about BPS. The article that you are commenting about is about TMBPF and how the move to TMBPF is not just rebranding but an rather transparent search for a plastic that works and is safe. I like the idea of avoiding plastic as possible, but saying "any move away from BPA is merely rebranding" is wrong and not helpful. This sort of alarmist comment is more likely to move people away from your point of view or at least give them incorrect ideas.

microcolonel 7y ago

> TMBPF had another apparent advantage. Manufacturers use two chemical steps to forge BPA into can linings. In the second stage, some BPA molecules don’t get incorporated into the polymer chains. Those strays are thought to account for most of the BPA that leaches from linings. Valspar chemists found a way to use TMBPF just once, early in the process, stanching the release of the unlinked molecules. The article is, at least somewhat, about their tetramethyl bisphenol F compound having a process advantage to bisphenol A which could reduce the leeching.

Polylactic_acid 7y ago

I wonder if there are any alternatives for sports drink bottles. Glass and metal bottles sound safest but you can't compress them to easily drink single handed.

potiuper 7y ago
Handle?
grawprog 7y ago
Apparently silicone ones exist: https://www.amazon.ca/Collapsible-Silicone-Water-Bottles-Camping/dp/B00UGQBTP8 https://www.amazon.ca/Collapsible-Silicone-Water-Bottles-Cam...
- colordrops 7y ago
  Does silicone not leach? Isn't it a synthetic compound as well?
  - hanniabu 7y ago
    Is also be concerned about residual chemicals from the manufacturing process, and this goes for metal too. For example I'm sure the molds have release spray that can get passed into the bottle, same with stainless steel machine spray, oils, and greases. And the thing with metal containers is that it's slightly porous and the chemicals can permeate a bit which would then leach back into the water. Another concern is low grade recycled metals with previous chemical contact used to manufacture the bottles of produced in places like China.
    - serf 7y ago
      silicone doesn't require mold release on a nicely machined mold. If it IS required, such as with complex shapes, food-grade oils are used. I suppose you could get a newly machined mold that may have cutting oil or something impregnated in the metal, but i'm not sure how you'd avoid that anywhere ,really. (Just wash everything thoroughly when you receive it and buy from reputable dealers, that seems about as good as you can get.)
      - hanniabu 7y ago
        food-grade oils should be* used And yes, I agree it's something that's a concern with everything and I hate that I can't ignore it and it's always at the back of my mind. I used to work in FDA related manufacturing and I know how things operate.
  - 7y ago
a_imho 7y ago
Never mind sport drinks, what about water? All sold in plastic bottles.
- jbarberu 7y ago
  Tap water? There are filtration systems for those living where the tap water is not drinkable.
- unhashable 7y ago
  Good mineral water is bottled in glass (and has beneficial minerals).

ip26 7y ago

And if you have no other (good) options, compromise by avoiding abuse (mechanical, heat, UV, harsh chemicals, acidic foods, dishwasher) and retiring the plastic early, 2-3 years. Also, while all plastics leech, HDPE/LDPE & PP appear to be the best choices if you're concerned about this. BPA, BPS, etc are added to polycarbonate. (In classic fashion, HDPE/LDPE & PP are the most boring of plastics)