On the freezing of plastics.
http://urbanlegends.about.com/librar...tic_dioxin.htm
http://urbanlegends.about.com/librar...tic_dioxin.htm
Quote:
| Comments: This widely circulated email (actually a revised version of an earlier message dating from 2002) not only conveys inaccurate information, it is falsely attributed to a Johns Hopkins University newsletter as well. No such information was ever issued by any department of the university. To combat the inaccuracies, Professor Rolf Halden of Johns Hopkins' Bloomberg School of Public Health addressed the email's opening allegation in a news release: OC&PA: What do you make of this recent email warning that claims dioxins can be released by freezing water in plastic bottles? RH: No. This is an urban legend. Freezing actually works against the release of chemicals. Chemicals do not diffuse as readily in cold temperatures, which would limit chemical release if there were dioxins in plastic, and we don't think there are. |











