Another plastic possibly unsafe?
In plastic land, when it comes to food and beverage containers, the general rule has been that the safer plastics are #1, 2, 4, and 5. On the flip side, the less-safe plastics are thought to be those labeled as # 3, 6, and most plastics labeled with number 7.Well, according to a new study, another plastic might be removed from that "safer" list; plastic #5, polypropylene.
Researchers at the University of Alberta, Canada, report that two chemicals leaking from polypropylene lab equipment were so active they ruined an experiment. The findings were issued as a warning in Science, a leading journal, to alert scientists to the possibility that polypropylene could be putting experiments at risk. The two substances found to leach were quaternary ammonium biocides and oleamide. It is not known if these might post danger to humans at the levels that they might leach out of plastic containers, such as many yogurt containers and coffee cup lids.
[Globe and Mail via Healthy Child, Healthy World]
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