Re: Eggs are corrosive - Saab NG900 & OG9-3 Bulletin Board - Saabnet.com
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Re: Eggs are corrosive
Posted by Dave in Houston (more from Dave in Houston) on Tue, 21 Jan 2003 10:09:53
In Reply to: Re: Eggs are corrosive, Tito, Mon, 20 Jan 2003 09:35:32
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My impression has always been that it's not the pH of a fresh egg which causes damage. Rather, it's the presence of sulfides. (I believe in the white, actually.)
When the eggs spoil, they make H2S, which is the distinctive rotten egg smell. In the presence of oxygen, the H2S will form H2SO4, sulfuric acid.
Therefore, it probably was the cold weather preventingd the egg whites from turning rotten that helped save the paint.
Disclaimer: I took organic chemistry 30 years ago, so any corrections from "real" chemists will be appreciated and I will take no offense.
Best regards,
Dave
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