Evaluation of non-intentionally added substances in PET bottles
Polyethylene terephthalate (PET) is a low diffusive polymer compared to other packaging polymer like polyolefins, which means that the migration of substances from the polymer into food is low. As a consequence the migration of the residual monomers ethylene glycol and terephthalic acid or the intentionally added polymerisation catalyst antimony is typically far below of the specific migration limits (for a literature compilation see Welle 2014).
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