What happens when commonly available polypropylene become brittle? I mean, what will it look like when it becomes brittle? Will it break as tiny insignificant powders or torn into smaller part but easily observable?
I'm asking this question because I have been freezing foods in freezer with PP containers probably well below 0ºC but I only happen to know that Polypropylene will become brittle below 0ºC. If it will become powder than it is very dangerous to the food but if it will be just torn into parts then I'll keep freezing food with PP without too much worries