Is plastic number 6 food safe?

Is Plastic Number 6 Safe for Food?

If you’ve ever flipped over a plastic container to check the tiny triangle with a number inside, you’ve seen the recycling code. One common question is whether plastic #6 is safe for food use. The short answer: it’s best to avoid it.

Plastic #6 refers to polystyrene, the material behind disposable cups, takeout containers, and packing peanuts. While it’s cheap and lightweight, it comes with health concerns. Polystyrene can leach styrene—a chemical classified as a possible human carcinogen—especially when exposed to heat or acidic foods. That means reheating leftovers in a polystyrene container could release harmful substances into your meal.

When it comes to food-safe plastics, experts recommend sticking with numbers #1 (PET), #2 (HDPE), #4 (LDPE), and #5 (PP). These are more stable and less likely to leach chemicals into food and drinks. For example, HDPE (number 2) is commonly used in milk jugs and yogurt tubs, while polypropylene (number 5) is often found in reusable containers and microwave-safe ware.

In contrast, plastics labeled #3 (phthalates), #6 (styrene), and many under #7 (which can include BPA and other unknown resins) are associated with greater health risks. While not all #7 plastics are dangerous, the category is broad and often unclear, making it safer to skip unless explicitly labeled as food-safe and BPA-free.

The bottom line? Check those recycling codes. When in doubt, opt for glass, stainless steel, or trusted plastic types. Small changes in your food storage choices can make a big difference in long-term health. And when you see that “6” inside the triangle, think twice before using it for your next meal.