Aluminum Coke Cans

Cecil's Columns/Staff Reports
1

So, if the ph of Coke is 2.7 and it strongly reacts with aluminum, why aren’t aluminum Coke cans dissolved by the Coke? Do they have an invisible coating shielding them from the acid? How does this work?

2
3

Pretty much: http://www.straightdope.com/columns/read/1158/why-doesnt-coke-dissolve-the-can

4

Oh, and here’s the link to the article that the OP is likely referring to:

http://www.straightdope.com/columns/read/111/why-does-ketchup-dissolve-aluminum-foil

5

The question is in reference to the column, “Why does ketchup dissolve aluminum foil?” (June 25, 1982).

Can manufacturing process from the Can Manufacturer’s Institute, which corroborates Telemark’s wiki cite.