Polypropylene is a type of plastic used to make everything from yogurt containers to water bottles. It's easy to recycle and is one of the most popular plastics used today. You'll know a piece of ...

A 5 is for “PP, or polypropylene, found in potato chip bags and ... As for how long you can keep a plastic food storage container, Craig said that “there is no strict time frame,” but you should base ...

The British Plastics Federation says plastic food containers made from polypropylene or polyethylene, or a mix of both, “generally” don’t contain BPA or phthalates. “Part of the problem is ...