Why do transparent phone cases turn yellow after a while? 2.38K viewsJanuary 3, 2024 Question100.55K May 24, 2019 0 Comments Note that this happens even if the phone rarely exposed to the sun light In: Chemistry 3 Answers ActiveNewestOldest Anonymous Posted May 24, 2019 0 Comments The transparent phone cases are often made of polyurethane. When exposed to UV light, polyurethane can degrade and become oxidized, turning into yellow-ish compounds called quinones. You are viewing 1 out of 3 answers, click here to view all answers. Register or Login
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