What is actually happening when you stain a plastic container/surface?

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If you put spagetti sauce in a tupperware container, the tupperware is seemingly stained orange forever. What is actually happening to cause this? Does the plastic container absorb molecules from the spaghetti sauce which is forever trapped in the polymer chains?

In: Chemistry

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Anonymous 0 Comments

So are some of the oil molecules from the Tupperware going into the food? How can we be confident that they’re not?

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