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Are Plastic Takeaway Containers Microwave Safe?
Are plastic takeaway containers microwave-safe? Simply replying “yes” or “no” cannot help you to identify which containers are microwave-safe. Not all plastic takeaway containers are microwave-safe. Putting the wrong type of plastic in the microwave can cause it to melt or warp, or release harmful chemicals into your food.
This guide will walk you through exactly which containers are safe to microwave, which are not safe, how to identify microwave-safe plastic food containers and what to do when you're not sure.
Are Plastic Takeaway Containers Microwave Safe
Yes, some plastic takeaway containers can be used in the microwave, but many cannot. The type of plastic used to make a container is important. You can usually use takeaway containers made from plastic that can be used in the microwave safely if they meet the rules and regulations for food safety.
But if your takeaway containers are not safe to use in the microwave, they can get damaged. This can make a mess and even damage your microwave. This process, called leaching, can release harmful chemicals.
How do I Know If My Takeout Container Is Microwave-Safe
Look for the Microwave-Safe Label
The best way to tell if a takeout cintainer is safe to use in a microwave is to look for a label that says "Microwave Safe" or has a icon of three wavy lines (sometimes with a microwave icon). If you see this symbol, the container has been tested to withstand microwave heat.
But there is no single universal symbol that is required by law, and manufacturers decide what to put on their own labels. If there is no symbol or label saying it is safe to microwave, do not use it in the microwave.
Look for the Recycling Code Number
Flip the container over and look for a number inside a triangle (the recycling symbol). This code tells you what type of plastic this container is made from.
| Code | Plastic Type | Microwave Safe? |
| #1 | PET (Polyethylene Terephthalate) | No |
| #2 | HDPE (High-Density Polyethylene) | Check the microwave-safe label |
| #3 | PVC (Polyvinyl Chloride) | No |
| #4 | LDPE (Low-Density Polyethylene) | Not recommeded for microwaving |
| #5 | PP (Polypropylene) | Yes |
| #6 | PS (Polystyrene/Styrofoam) | No |
| #7 | Other | No |
Watch Out for Any Warning Signs
Even if a container passes the above checks, stop using it if you notice any of the following signs:
- Cracks in the plastic (the container is breaking down)
- Warping after it has been heated
- An unusual smell during or after it has been heated in the microwave
As most takeaway containers are not designed for microwave use, if you are unsure whether a container is suitable for reheating in the microwave, the safest approach is to transfer your food to a glass container before heating.
Plastics That Should Never Go in the Microwave
Plastic items that should never be placed in the microwave include disposable food containers that are not clearly labelled as microwave-safe, as well as any plastic that is cracked, warped, or discoloured. You should avoid:
- #1 PET: This is often used for packaging cold food, like salad.
- #6 PS / Styrofoam: They are usually not safe to be heated in a microwave and can change shape or release other substances when they are heated.
- Any unlabeled takeaway plastic containers: If a product is not labelled 'microwave-safe', it should be considered unsafe for microwave use.
Plastic Takeout Containers That Are Microwave-Safe
Plastic takeout containers that are suitable for microwave use are typically made from #5 polypropylene (PP) and are clearly labelled as microwave safe. They are popular for meal preparation and takeaway due to their versatility in reheating, and are also suitable for use in the freezer and dishwasher.
Our PP food containers and Mineral-Filled polypropylene (MFPP) hinged containers are microwave safe and BPA-free. You don't need to worry about the possible health effects that may come from the release of these toxic chemicals.
For inquiries regarding microwave-safe and BPA-free plastic food containers, please contact us. Our team is here to assist you with product recommendations, large orders, custom branding, and more. If you require specific details regarding takeaway packaging, please provide us with your contact information, and we will respond promptly.
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