
Plastic recycling can be confusing, but it's an important topic to understand to prevent plastic waste from ending up in landfills or harming marine life. There are seven plastic recycling symbols, each representing a different type of plastic and distinct recycling instructions. Plastic #6, or polystyrene, is a lightweight material often used in Styrofoam takeout containers, and it is generally not recyclable. Even when other Styrofoam products are recycled, takeout containers are often not accepted because they are difficult to sanitise. To recycle plastic #6, it's important to research your town's legislation and rules for recycling to understand what can and cannot be recycled in certain bins.
| Characteristics | Values |
|---|---|
| Plastic Type | 6 |
| Name | Polystyrene |
| Common Items | Styrofoam takeout containers |
| Recyclability | Generally not recyclable |
| Environmental Impact | Leaches toxic chemicals into the environment |
| Health Impact | Styrene, a component of polystyrene, is suspected to be carcinogenic and neurotoxic for humans |
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What You'll Learn
- Plastic #6 is polystyrene, commonly used in Styrofoam takeout containers
- Plastic #6 is not always accepted by recycling companies
- Plastic #6 is a lightweight material that can easily enter the environment
- Plastic #6 can leach toxic chemicals and is harmful to marine life
- Plastic #6 should be avoided, especially when microwaving food or beverages

Plastic #6 is polystyrene, commonly used in Styrofoam takeout containers
Plastic #6, also known as polystyrene, is commonly used in Styrofoam takeout containers. It is a versatile plastic that is easily recognised as the white foam blocks in packaging or packing peanuts. It was invented in 1839 by German apothecary Eduard Simon.
Polystyrene is generally not recyclable. Even when some products made from this material are recycled, takeout containers are often not accepted because they are difficult to sanitise. Plastic #6 is lightweight and easily ends up in the environment, where it can leach toxic chemicals. It has been found in 100% of human fat tissue samples dating back to 1986 and is known to cause cancer in animals. It is also suspected to be a cancer-causing neurotoxin for humans.
However, despite the challenges, polystyrene can be recycled. It just takes a little more effort. Curbside recycling programs usually don't allow polystyrene because it's challenging to manage. It's hard to separate at facilities, and it can contaminate other recycling materials. It also needs to be transported to a specialist facility, which is costly.
To recycle polystyrene, you can follow these steps:
- Make sure it's clean and free of any tape, plastic film, labels, loose parts, or glued-on cardboard.
- Separate the polystyrene foam from your regular recycling.
- Break or cut it into small pieces so more can fit in a box.
- Remove any coloured foam, as recycling facilities usually only take clean, white polystyrene.
- Drop the foam off at your local Styrofoam recycling centre.
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Plastic #6 is not always accepted by recycling companies
Plastic #6, also known as polystyrene or Styrofoam, is a lightweight, cheap material that is often used in food packaging, such as takeout containers, disposable cups, and straws. While some recycling programs may indicate that they "accept" Plastic #6, it is important to note that it is not always recycled and may even be sorted out and sent overseas.
One of the main challenges with recycling Plastic #6 is that it is difficult to sanitize, especially when it comes to takeout containers. This means that even when other Styrofoam products are recycled, takeout containers are often excluded. Additionally, Plastic #6 has a higher melting temperature, which adds to the cost of the recycling process and makes it less desirable for recycling companies.
The low value of Plastic #6 as a post-consumer commodity further contributes to the challenge of recycling. There is a limited market for purchasing sorted polystyrene, and it is often sorted out and sent overseas, melted down into a #7 "other" plastic, or burned as fuel. These factors make it less economically viable for recycling companies to process Plastic #6.
It is crucial to understand the local recycling guidelines, as they vary depending on the municipality. Some areas may not accept Plastic #6 in standard recycling bins and it may require specialized handling or disposal methods. It is always best to check with local guidelines or recycling centers to understand their specific capabilities and limitations regarding Plastic #6.
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Plastic #6 is a lightweight material that can easily enter the environment
Plastic #6, also known as polystyrene, is a lightweight material that is often used in the production of Styrofoam takeout containers. Unfortunately, these containers are generally not recyclable, even when other styrofoam products are accepted by recycling programs. This is because takeout containers are difficult to sanitise, and as a lightweight material, plastic #6 easily finds its way into the environment, where it can cause significant harm.
Plastic #6 is so lightweight that it can easily become airborne, especially when improperly disposed of. This allows it to travel long distances, ending up in natural environments far from the source of pollution. Once in the environment, plastic #6 can persist for a long time as it is not biodegradable. Over time, it can break down into smaller pieces known as microplastics, which can be ingested by animals and even find their way into human food and water systems.
The presence of plastic #6 in the environment poses a significant threat to wildlife and ecosystems. Animals may mistake small pieces of plastic for food, leading to digestive issues and even death. As plastic #6 breaks down, it can release toxic chemicals, such as styrene, which has been linked to cancer in animals and is suspected to be a neurotoxin for humans as well. These toxic chemicals can accumulate in the environment and work their way up the food chain, affecting the health of organisms at higher trophic levels.
To prevent the harmful effects of plastic #6 on the environment, it is crucial to reduce its usage and properly dispose of it. Consumers can opt for reusable alternatives to single-use plastic products, such as glass food storage containers and metal straws. When plastic products are unavoidable, proper recycling methods should be followed to keep them out of landfills and natural environments. However, it is important to note that the recycling process can be complex, with different rules and regulations depending on your location. Therefore, individuals should familiarise themselves with their local recycling guidelines to ensure they are correctly recycling plastic #6 and other plastic materials.
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Plastic #6 can leach toxic chemicals and is harmful to marine life
Plastic #6, also known as polystyrene, is a lightweight material that is often used in Styrofoam takeout containers. Unfortunately, these containers are generally not recyclable, even when other types of Styrofoam products are accepted. This is because takeout containers are difficult to sanitise.
Plastic #6 is particularly harmful to the environment as it easily finds its way into the ecosystem, where it can leach toxic chemicals. Due to its lightweight nature, it can be ingested by marine organisms, causing adverse physiological effects and even death. These chemicals can also act as endocrine disruptors, which can be harmful at extremely low concentrations and pose risks to the entire marine ecosystem, including marine biodiversity and food availability.
In the ocean, plastic is consumed at all levels of the food chain. Scientists have recorded plankton eating tiny polystyrene beads, and larger organisms, such as sea turtles, seagulls, dolphins, and whales, often mistake plastic for food. This plastic can cause perforated organs and clog digestive tracts, leading to starvation.
The problem of plastic pollution is particularly evident in areas like the Great Pacific Garbage Patch, where plastic debris is highly concentrated. This toxic ecosystem is endangering the wildlife that comes into contact with it, and the flow of single-use plastic into these areas must be stopped to protect both human health and marine life.
To reduce the impact of plastic #6 and other single-use plastics, individuals can make conscious choices to refuse, reuse, and reduce their plastic waste. This includes using reusable bags, opting for loose produce without stickers, and investing in reusable straws and containers.
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Plastic #6 should be avoided, especially when microwaving food or beverages
Plastic #6, also known as polystyrene or Styrofoam, is a widely used, lightweight, and inexpensive plastic. It is commonly used for disposable cups, food containers, and packaging materials. However, it is essential to be cautious when using this type of plastic, especially when microwaving food or beverages.
The safety of using plastic #6 in the microwave depends on being well-informed and cautious. While it is generally considered safe, there are a few important considerations. Firstly, it is crucial to check the labelling and understand the heat resistance limitations of the plastic. Plastic #6 has a relatively low heat resistance compared to other plastics, and it can begin to soften or melt at high temperatures, potentially releasing harmful chemicals into your food. Therefore, it is not recommended to microwave high-fat foods in plastic #6 containers, as they can reach higher temperatures and increase the risk of chemical leaching.
Additionally, microwaving plastic #6 can lead to warping or breakage. Due to its low melting point, it can easily warp or break apart in the microwave, creating a mess and potentially damaging your appliance. Safer alternatives for microwaving include glass, ceramic, and polypropylene (#5) containers, which are more heat-resistant and do not release toxins when heated.
Furthermore, there are health risks associated with microwaving plastic #6. When heated, it can leach harmful chemicals, such as styrene, which is a potential carcinogen, into your food. These chemicals can also be endocrine disruptors, posing serious food safety concerns. To reduce exposure to these chemicals, it is advisable to avoid using plastic containers marked #6, especially when microwaving.
To summarise, while plastic #6 is convenient and widely used, it is essential to be cautious when using it for food storage and microwaving. Always check the labelling, avoid microwaving high-fat foods, and consider using safer alternatives like glass or ceramic containers to minimise potential health risks and maintain the condition of your microwave appliance.
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Frequently asked questions
Plastic #6, also known as polystyrene, is a lightweight material used to make Styrofoam takeout containers.
Plastic #6 is generally not recyclable. Even when other Styrofoam products are recycled, takeout containers are often not accepted because they are difficult to sanitise. However, it depends on your municipality's guidelines.
Plastic #6 easily finds its way into the environment, where it can leach toxic chemicals. It has been found in 100% of human fat tissue samples dating back to 1986 and is known to cause cancer in animals. It is also suspected to be a cancer-causing neurotoxin for humans.











































