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Why Does Bottled Water Expire? The Plastic Problem Explained
Most people are surprised to see an expiry date stamped on bottled water, since pure H₂O is chemically stable and does not spoil. The real reason lies not in the water but in its container: polyethylene terephthalate (PET) plastic gradually degrades under heat and ultraviolet light, releasing trace chemicals and microplastics that can alter ...
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