I started to write a comment under the question Is there an efficient way to dispose of credit cards? about the dangers of burning PVC, because this can lead to dangerous chlorine compounds in the smoke (notable: dioxine).
Upon searching for evidence for that I came across several links confirming this:

... as well as links suggesting that this no longer is the case:

All these sources may not be objective.
What is the current, state-of-the-art, objective knowledge that we have about burning municipal waste with PVC in waste incineration facilities?

Notes:

  • I'm not asking about home burning or open fires; I'm asking about controlled burning in waste incineration facilities.
  • The question is not about phthalates being used as plastic softeners during the lifetime of the product; only when incinerating.
  • This is not just about credit cards, e.g. there's far more PVC landing in our waste because of blister packaging, and from pipes, vinyl flooring, hoses, cable coatings, medical devices, plumbing and automotive parts, upholstery, housewares, shower curtains, raincoats, toys, school supplies, food packaging, and shoes.
  • The question could be extended to all halogenated plastics, i.e. made from chlorine or fluorine; not just PVC.

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