I like to put lemon or vitamins (those tablets that also create fizzyness) in my water and have been wondering if it is problematic to do so in my aluminium drinking bottle. I wouldn’t normally think so, since soft drinks also often come in aluminium cans, but I’m not sure. Are aluminium salts even unhealthy?
I have a Quechua bottle that looks slightly yellowish/golden on the inside. Might that be some sort of lining?
that’s probably just anodized aluminum (not lining)
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The yellowish color isn’t lining, lining is only in aluminum cans because it’s cheaper and easier than using thicker aluminum and is usually clear (unless stained). The lining is what gives the cans structure, usually made of epoxy and/or bpa plastic. Without the lining, you can tear a soda can like double thick tin foil. No need for lining in a steel bottle.see the comment below by @schmidtster for the actual use of lining in metal containers, that’s what I get for trying to use something I was told in highschool chemistry. The bottle I question is still an unlined stainless steel bottle so I’ll leave the rest of the comment.The yellow/golden color on the inside of your bottle is just the metal being stained. Stainless steel isn’t really stainless, just harder to stain because the chromium in it forms its own layer of oxidation that protects from being directly touched. Best guess is that the lemon you put in your water breaks down that oxidation layer before you can drink enough, then the lemon and vitamins/minerals/coloring in the tablets stain the metal
This is completely false. The lining is so the metal can’t be broken down by whatever is in it. Without it contaminants can leach into the product, or even dissolve the can. It’s in any metal that touches food products.
Leave water in those non coated metal containers long enough and it’ll leach from the metal.
in some cosmic sense yeah there will be equilibrium after some time but most of the time it’s just called “corrosion”
I believe the distinction is necessary, corrosion would be the entire bottle “dissolving” which wouldn’t happen with water. With leaching only a few elements would transfer.
What? Corrosion is the surface oxidizing, not the entire thing dissolving.
When the surface oxides, that layer get removed, than the surface oxides, that layer disappears. Repeat ad-nauseam until it’s completely gone.
Dissolving is oversimplifying, but eventually the entire thing will disappear with corrosion.