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by Answerbag Staff on March 11th, 2010

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Can you put Styrofoam in a microwave?

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  • by Allison Westbrook on March 11th, 2010

    Answerbag Experts

    Great Answer

    Professionally Researched. (What's this?)

    On One Hand: Some Types are Safe to Microwave

    Styrofoam, also known as polystyrene, is often used as a container for leftover food and to-go dinners. According to Harvard University Medical School, some polystyrene is safe for microwave usage. Check the label for microwave safety before heating Styrofoam. Microwave dinner trays are often safe for one-time usage, but should be ventilated.

    On the Other: Bisphenol A Can be Deadly

    Styrofoam often contains the chemical bisphenol A, also known as BPA. This chemical is a known carcinogen and can be dangerous for humans to ingest. BPA can be released from polystyrene when it is heated, causing potential health problems.

    Bottom Line

    Only use containers that are labeled "microwave-safe" to heat food in a microwave. Plastics like polystyrene can contain harmful chemicals. A glass or porcelain container is a better choice if possible.

    Source:

    Harvard Medical School Family Health Guide: Microwaving Food in Plastic

    Seattle Community Network: Which Plastics are "Microwave-Safe"?

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  • by Yssarile on July 15th, 2010

    Yssarile

    Whether or not you can put Styrofoam inside a microwave largely depends on the comparative sizes of the two items. ex. You cannot put a piece of Styrofoam inside a microwave if the piece of Styrofoam is larger than said microwave.

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