The Science Behind Aluminum Soda Can Coatings
You've probably heard some horror stories about your soda of choice. But could the seemingly insignificant and greatly overlooked soda be worse for you than the drink inside? A lot happens to soda cans under their aluminum surfaces. They are lined with a protective cover that prevents the soda inside from reacting with the metal. Carbonated Carbonated beverages are often corrosive, not only to our teeth but to metal as well. This is because, in addition to carbonated water and lots of sugar, sodas also contain acid. Acids react with and corrode all kinds of metals, including the aluminum used in soda cans. If a typical soda is packed in an aluminum can without a protective cover, it can end up eating the material. This is because of phosphoric acid and citric acid. Soda can manufacturers, such as Ball, have determined that these substances have high corrosion levels and must be compensated for. To prevent any accidents, a protective coating is added to the inside of ...