Are Silicone Containers Microwave Safe?

are silicone containers microwave safe

In January, all Christmas leftovers go off. Only some festive food in your freezer may remain. Thus, you are to go to the local shop, buy groceries and meat products and cook again. When holidays are over, Americans work hard again. Now, you might have to eat out, but not in a restaurant. Carry your delicious, healthy dishes in flexible boxes. Are silicone containers microwave safe? Synthetic polymer material is beneficial. It withstands external pressures and high temperatures. Therefore, you can heat or freeze your handy container. Some silicone products are suitable to cook soups and bake pies. You can put them in your dishwasher. These food containers tolerate heat and continuous water exposure. Are they better than plastic ones? Are there any weaknesses? Let’s get into details.

What Kind of Containers Are Microwave Safe?

Food storage containers are handy and useful boxes. They are essential to take your food out. Unfortunately, Christmas break at schools is so short! So, now you are to pack healthy and nutritious food for your kids. Bento and food storage boxes help us to:

  1. Keep leftovers and food supplies clean and tasty.
  2. Avoid money waste due to food spoilage.
  3. Carry lunch to the office or school.
  4. Preserve kitchen ingredients like rice or spices.

Your best containers for freezing soup are durable. They are solid, versatile, and handy. Above all, sealed lids prevent odors from getting inside: they eliminate leaks and spills. Finally, modern containers withstand extremely low temperatures: but not all of them are thermal-resistant.

Microwavable lunch containers are another thing. There are only a few suitable materials. Glass and ceramic are microwave-safe but heavyweight and not convenient to carry. Most plastics don’t withstand heat. They might melt in high temperatures. Fortunately, modern polymer materials exist.

Right Now interesting information about best containers for freezing soup!

Is Silicone Better than Plastic for the Environment?

There are a lot of food-safe materials nowadays. They are non-toxic, free of harmful chemicals and green. Look at your best flour storage container. How does it look like? A top-quality box is to be lightweight and airtight. Availability of a reliable lid is a must. It’s necessary to prevent moisture and keep unpleasant odors away.

See interesting information about best storage container for flour!
Are your storage containers transparent? Most plastic and glass boxes are. Sunlight and heat exposure is harmful. But if you store your cereals or non-perishable foods in a kitchen cabinet or pantry, it’s virtually safe. Paper sacks suit only packing and carrying needs. But they are eco-friendly and it’s great. What about plastic and silicone? Let’s check their properties.

Density, g/cm3 0.86-0.95 1.1-1.61.0-1.1
Chemical Resistance high superior excellent
Melting Point, F 266-340- 520-560
Tensile Strength, MPa 3.8-4.8 2.4-5.5 1.8-2.0

Does silicone melt in a microwave? Melting point of this elastomer is absent. Silicone rubber doesn’t melt, remaining solid. At high temperatures that exceed 392 degrees, it may become brittle. Nevertheless, it resists microwaving, dishwashing and baking.

How Do You Know if a Container is Microwave Safe?

If you need to carry your lunch out, plastic boxes are a superior choice. They are pretty lightweight, easy to use even for a little kid. They are stackable and flexible enough to enable handy food storage. Being pretty solid and durable, they won’t break, if you drop a container on the floor.

Best dishwasher safe lunch box is BPA-free and non-toxic. It’s affordable but long-lasting and heavy-duty. In view of safe food handling, FDA approves several types of plastic that are safe for food contact. They include:

  • HDPE;
  • LDPE;
  • PP;
  • PS.

Find out more about dishwasher and not dishwasher safe products! Click here for more info!

Most of them should contain only cold food or beverages. Due to quite low melting points, they don’t resist heat. Being chemically-resistant at room temperature, plastic containers may become toxic during microwaving. They would release toxic chemicals into your healthy dishes.

Therefore, selecting microwavable lunch containers for adults, look at their bottoms. There should be a sign or symbol, looking like wave lines. A recycle symbol and plastic number are to be available. Only number 5 that is polypropylene is considered safe to heat and microwave.

Is Silicone Safe for Food Storage?

To store liquid food like soups or stews, air-tight containers are necessary. They might consist of glass, plastic or stainless steel. Nevertheless, lid rims and seals are silicone. They are flexible and durable, enabling leak-proof, airtight performance.

Silicone is a polymer or elastomer that looks and performs like rubber. It’s great to ensure insulation and anti-vibration protection. Modern material, invented in the 1940s, doesn’t pollute the environment. Consisting of silica, hydrogen, oxygen and carbon, it contains no harmful chemical.

Your best silicone food storage containers are:

  • lightweight;
  • odorless;
  • non-toxic;
  • long-lasting;
  • impact and temperature-resistant;
  • easy to clean and use.

Right Now interesting information about best silicone food storage containers!
Is silicone safe for cooking? Based on natural elements, it’s chemically inert. It withstands heat up to 400-450 degrees. Silicone is not prone to degradation or damage: it doesn’t crack or harden even in several years. Additionally, collapsible containers are space-saving.

Silicone bakeware, utensils and containers come with sleek, non-porous surfaces. Food doesn’t stick to them. So, these products are intuitive to clean. They might become a bit slimy inside, developing a greasy film. After or before dishwashing, remove it by hand with baking soda.

Bottom Line

Is it safe to microwave in silicone? It’s one of the few modern inert materials; paper sacks don’t count. Silicone containers are as clean and eco-friendly as glass. Meanwhile, they are lightweight, impact, and crack-resistant. Silicone withstands extremely low and high temperatures easily. So, if you want to freeze or microwave it, don’t doubt. It won’t damage food container’s surface. They might be too flexible or collapsible to store liquid food. But silicone is great, modern bakeware and food container’s material.


Hi, I’m David from St Louis, Missouri. Are you looking for a storage box? This blog helps you to make your informed decision. I’ve initiated it, trying to apply my knowledge and personal experience. So, be informed and don’t hesitate to ask questions.

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