Can you microwave with styrofoam?

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Microwave ovens have been around for decades and are known for helping with kitchen work, specifically reheating food - simpler than previous manual methods. However, due to health concerns, users may wonder what type of container is best to use in the microwave. Especially the level of safety for foam boxes.

1. What is polyfoam?

Styrofoam is referred to as a polystyrene foam commonly used in the construction industry. However, in some countries, such as the United States and Canada, the term is often incorrectly used to refer to an expanded polystyrene foam that is injected into molds to make disposable coffee containers, plates, or cups. .
These types of containers are very popular because of their low cost and act as a good insulator, helping to keep food and drinks warm. Polystyrene-based containers were popular in the past, but have been gradually banned in some cities in the United States, such as San Francisco and Seattle, due to health and environmental effects. Environmentally, these types of boxes do not decompose easily and are difficult to recycle.
In addition, animals may mistakenly eat discarded cans. From a health perspective, the styrofoam box contains a compound called styrene, which has been linked to cancer in animal and human studies.

2. Can styrofoam containers be used in the microwave?

There are many recommendations on the use of foam boxes. One major reason is that this type of canister contains a compound called styrene, which human and animal studies have shown to be associated with cancer risk.
In addition, when food or beverages are microwaved in containers made of polystyrene or plastic, substances used in manufacturing may leach into the food. This especially applies to fatty foods, such as meats and cheeses. The U.S. Food and Drug Administration (FDA) requires plastic and polystyrene containers, cups, and plates to be tested for safety and usability in the microwave. That means any polystyrene or plastic products that are labeled microwave safe have been tested.
On the other hand, users should avoid using containers that are not labeled as safe when putting them in the microwave for the purpose of reheating food. This precaution does not apply exclusively to microwave ovens, but also applies to other heating methods.

3. How to reheat food safely

Here are some tips to help users microwave food safely:
Use microwave-safe containers. If using a styrofoam container, the user should check the safety label. Transfer food to a ceramic, glass or pyrex container before reheating in the microwave. Use stove or oven. Another way to avoid any potential risks when using the microwave is to transfer food to a pot or pan to warm on the stovetop or to a baking tray to heat in the oven. Check for scratches or cracks. Polystyrene and plastic containers that are old or have scratches or cracks should be handled properly and discontinued Ventilate the container before heating. This prevents pressure from building up, causing the food inside to explode Be careful when handling items after reheating, use insulated gloves or mittens to avoid burns

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Reference article: Healthline.com