Reheating food in Styrofoam containers is not recommended. Styrofoam, or expanded polystyrene (EPS), is a type of plastic that begins to soften at 212 degrees Fahrenheit and can potentially melt and leach chemicals into your food.
It is best to avoid heating containers made of EPS in the microwave. If you need to reheat food in a Styrofoam container, ensure it has a microwave-safe label and follow all instructions carefully.
Additionally, keep an eye on the container while microwaving, as it may start to soften or even burn and melt if heated for too long.
It’s always better to err on the side of caution when reheating food. Use containers made from materials safe for microwaving, such as glass, ceramic, or paper products, instead of Styrofoam to ensure your safety.