"...i was
told it made a chemical change in the plastic bottle ..."
That is complete BS. I was a chemist for 35 years,
much of that time I spent extruding plastics into fibers. These were the
same plastics used for food containers. Polyethylene, polypropylene, and
Polyethyleneterapthalate (PET) are the most common plastics used for food
contact. None of them are changed at all by freezing. They do not
have any additives (plasticizers) like vinyl to leach out either hot or
cold. Think of all the frozen food you eat that was packaged in plastic
(polyethylene) bags, Think of all the Tupper Ware (polypropylene) in our
nations freezers.
The only way to degrade these plastics would be to heat
them well above their melting point. The mess and smoke would be your hint
to throw them away. (the polypropylene and polyethylene degradation
products would most likely not hurt you either. I'm not so sure about PET,
but I doubt any really big problem)
Ed
Ed & Wendy Hauser 2994 Mittower
Road Victor, MT 59875
