Polyethylene Terephthalate (PET) is clear, tough, and shatterproof polymer resin and provides a barrier to oxygen, water, and carbon dioxide. PET’s ability to contain carbon dioxide (carbonation) makes it ideal for use in carbonated soft drink bottles. PET is also used to make bottles for water, juice, sports drinks, beer, mouthwash and even alcohol. You can also find PET food jars for peanut butter, jam, jelly, and pickles as well as in microwavable food trays.
According to the American Chemistry Council, PET has been approved as safe by the FDA and the International LifeSciences Institute (ILSI). In 1994, ILSI stated that “PET polymer has a long history of safe consumer use, which is supported by human experience and numerous toxicity studies.” The American Chemistry Council cautions that products made with PET be used only as indicated by the manufacturer. For example, the microwavable trays are only to be used one time and not to store or prepare foods other than those for which they are intended.
Recent studies have shown, however, that reusing bottles made of PET can in fact be dangerous. PET was found to break down over time and leach into the beverage when the bottles were reused. The toxin DEHA also appeared in the water sample from reused water bottles. DEHA has been shown to cause liver problems, other possible reproductive difficulties, and is suspected to cause cancer in humans. Therefore, it’s best to recycle these bottles without reusing them.
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