
“It’s 3, 5 and 7, right? Or is it 4, 6 and 7?” “There’s a 7?” When safe plastics came up at a get-together at my house last week, and none of could remember exactly what we were trying to avoid, I realized it was time for a refresher. I’ve done a little research on your behalf to clarify which are safe plastics and which are best avoided.
No. 1 plastic is PET, or polyethylene terephthalate. Commonly used in beverage bottles, PET is generally considered safe, although some warn not to reuse it repeatedly because it may degrade over time. Eco alternative: Stainless-steel or glass bottles.
No. 2 plastic is HDPE, or high-density polyethylene. This plastic is also considered safe; you’ll find the No. 2 symbol on yogurt containers, juice jugs and in plastic bags such as those used by grocery stores and inside cereal boxes.
No. 3 plastic is PVC, or polyvinyl chloride. Found in food packaging and used in some cling wraps, there are enough studies showing concerns about PVC that it’s best avoided. Better safe than sorry, right? Eco alternative: Stainless-steel or glass food containers, or containers made with No. 1 or No. 2 plastic.
No. 4 plastic is LDPE, or low-density polyethylene. This flexible plastic is used to make plastic bags and wraps, among other applications. While considered safe, who wants to see all those bags in the landfill? Eco alternative: Reuseable bags for produce and all your shopping needs. I’m sure Eco Logic readers are all over this one!
No. 5 plastic is PP, or polypropylene. You’ll see it in reuseable food containers (not the lids, though), some condiment bottles, and it’s used to make fleece jackets, that thin, clear film that envelops stationery, and other uses. While generally considered safe, not every municipality has recycling facilities for polypropylene.
No. 6 plastic is PS, or polystyrene. Commonly used in foam takeout, egg, hot drink and other containers, as well as for meat trays and foam packing materials, polystyrene will release styrene monomer, particularly when your food is hot and contains fat. Polystyrene is unrecyclable in many areas. Eco alternative: Bring your own takeout food container or, if you ordered something dry like a pizza, quesadilla or sandwich, ask the server to put your leftovers in tinfoil. Buy your meat from a butcher who uses butcher paper.
No. 7 plastic can be a few things, but is most often polycarbonate, used to make hard, transparent plastic products, and which may contain BPA, or bisphenol-A. Like polystyrene, BPA will release from polycarbonate more quickly when heated. Eco alternative: Once again, stainless-steel or glass bottles are great choices.
Are you avoiding certain plastics?