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Chemistry
Correcting the retrobrite "marble" effect
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[QUOTE="TeethWhitener, post: 6899601, member: 511972"] Here’s my guess. Computer case plastic is probably ABS. It’s a nice cheap impact resistant polymer used all over the place for these types of applications (e.g., Lego bricks are ABS). However, the “B” in ABS is butadiene, which is probably irreversibly oxidized upon exposure to peroxide. This will alter the chemical and physical properties of the plastic, making it 1) less tough, and 2) more hydrophilic. So my guess is when you get it wet, a thin layer of water is retained long enough to make the surface appear homogeneous (due to refractive effects). After a few minutes, the water evaporates completely, revealing the discoloration caused by the chemical changes induced by the peroxide. Just my $0.02. [/QUOTE]
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Correcting the retrobrite "marble" effect
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