I get a daily email from Mountain Wings and they have some interesting things. This one has confused me for a long time.
Why doesn't Coke and Pepsi dissolve the cans?
Q: In your book The Straight Dope you state that Coca-Cola will dissolve aluminum. My question is this: How is it that this beverage is sold in aluminum cans without oxidizing them?
Cecil replies:
According to Coke, the cans are "coated with a very thin layer of a type of light, food grade plastic material approved by the FDA." This prevents the highly corrosive contents from dissolving the containers. The unanswered question is, what keeps them from dissolving you?
~Cecil Adams, from The Straight Dope~
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http://www.mountainwings.com/past/9205.htm
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Pat, The Avid Embroiderer
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