Do Styrofoam cups leach chemicals?

Online Answer
Avoid heating food in Styrofoam or polystyrene containers, especially fatty foods, which can leach styrene, says David Andrews, Ph. D., of the Environmental Working Group. How can you tell if a plastic container contains polystyrene? Look for a "6" on the bottom.
Related Questions 📌
Products derived from plastics, and those especially from oil, tend to be seen as environmentally unfriendly. Polystyrene is also slow to biodegrade which adds to its poor reputation among environmentalists..
Polystyrene is highly flammable and ignites at relatively low temperatures. It has been linked with huge fires, often in commercial buildings and warehouses, where its use is more common.