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If you’re using aluminum foil to wrap your food, a reaction usually occurs when it comes into contact with salt, vinegar, highly acidic foods (tomatoes) or highly spiced foods. It seems like the foil is being eaten away or dissolved but the real explanation is that the aluminum turns into an aluminum salt. Brown Fused Aluminium Oxide
Is it bad if aluminum foil is in contact with salt, vinegar, highly acidic foods — such as tomatoes — or highly spiced foods? What happens is they react to form an aluminum salt.
What is aluminum foil used for?
When aluminum foil touches salt, vinegar or a highly acidic food — such as tomatoes — a chemical reaction takes place, turning the aluminum into an aluminum salt. The salt doesn’t eat away at the foil; it is actually formed between the foil and whatever’s touching it.
Why to Choose aluminum foil?
Garnet Sand Aluminum foil and vinegar react because aluminum oxide is produced in the reaction. Aluminum oxide is a white powder that doesn’t dissolve in vinegar, so it stays solid.