Can You Microwave Plastic?
Only microwave plastic containers that are specifically labeled microwave-safe. Not all plastics can withstand microwave heat - some melt, warp, or may leach chemicals into food. Look for the microwave-safe symbol (wavy lines) or text on the container before heating.
Key Takeaways
- Plastics are made from various compounds, and their heat tolerance varies widely.
- Plastic wrap can be used in microwaves if it does not touch the food directly and is microwave-safe.
- Takeout containers, yogurt cups, and butter tubs are generally not microwave-safe even though they held food.
Explanation
Plastics are made from various compounds, and their heat tolerance varies widely. Some plastics remain stable when heated, while others can melt, release harmful chemicals, or contaminate food. The FDA tests and approves certain plastics for microwave use.
Microwave-safe plastics are designed to withstand the temperatures reached during normal microwave cooking without melting or leaching significant amounts of chemicals. These containers will be marked with a microwave-safe symbol or recycling codes 2, 4, or 5 (though the symbol is most reliable).
Even microwave-safe plastic should not be used if it is damaged, stained, or has been through many uses. Old plastic containers may break down over time. When heating fatty or oily foods, which reach higher temperatures, glass or ceramic is the safest choice.
Things to Know
- Plastic wrap can be used in microwaves if it does not touch the food directly and is microwave-safe.
- Takeout containers, yogurt cups, and butter tubs are generally not microwave-safe even though they held food.
- Never microwave plastic containers that previously held non-food items like cleaning products.