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I have observed that plastic toys that are stored in the plastic blisters, which is transparent, tends to stay the same over a long time. There are no chemical reaction taking place even after decades of storage.

I am specifically asking about the plastic toys like Hot Wheels and Matchbox. I would like to know what is the chemical compound used for such stable use.

Thank you for reading my question.

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To answer a question like this I would look up blister packaging and see what materials are commonly used:

Blister packaging article

Note the article I have linked above suggests some possibilities: PVC (polyvinyl chloride), PVDC (Polyvinylidene_chloride) and PCTFE (Polychlorotrifluoroethylene).

My guess is the most likely material is PVC by the way (it seems to be very common in packs I have looked at).

I would also look for a recycling code embossed on the material, for example PVC is a triangle with a "3" inside it. (The code is not always put on packs though.)

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  • $\begingroup$ There were no recycle codes, and that is why I decided to ask this question and I am curious as to understand which materials do not start any chemical reactions with plastic toys. $\endgroup$ – SoundStage Jun 13 '16 at 6:37
  • $\begingroup$ Why not ask the manufacturer of the toys what the material is? $\endgroup$ – William Hird Jun 23 '16 at 17:19

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