
Plastic recycling is a complex process, and not all plastics are created equal when it comes to their recyclability. The numbers and symbols on plastic items indicate the type of resin used, with #5 plastic, or polypropylene, being a hard and heat-resistant material. While #5 plastic containers were once widely accepted by recycling centers, changes in policies and the challenges of plastic recycling have made their disposal more difficult. So, are #5 plastic containers recyclable, and what are some alternatives to recycling them?
Are #5 plastic containers recyclable?
| Characteristics | Values |
|---|---|
| Type of plastic | Polypropylene (PP) Hard and heat-resistant |
| Common uses | Prescription medicine bottles Yogurt cups Hummus tubs Single-use cutlery Lids of single-use drink bottles Deodorant, lotion, shampoo packaging Single-use laboratory and medical supplies |
| Recycling | Not accepted by TerraCycle Some curbside and drop-off programs accept #5 rigid plastic recycling, but films and bags are a problem |
| Alternatives | Buy yogurt in bulk or in glass containers Buy a three-month supply of medicine to cut down on packaging |
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What You'll Learn

#5 plastic containers are made from polypropylene (PP)
Polypropylene was first polymerised in 1951 by Phillips Petroleum chemists J. Paul Hogan and Robert Banks, who demonstrated the polymerisation of propylene. However, it was not until 1954 that Giulio Natta and Karl Rehn discovered stereoselective polymerisation to the isotactic form, which led to large-scale commercial production by the Italian firm Montecatini from 1957 onwards.
The unique characteristics of polypropylene make it highly versatile. It can function as both a plastic and a fibre, allowing for a wide range of applications. For example, it is used in plastic packaging, plastic parts for machinery and equipment, and fibres and textiles. PP is also commonly used in the automotive industry for battery casings, trays, bumpers, and interior details due to its lightweight and adaptable nature.
The recycling of #5 plastic containers made from polypropylene can be challenging. While some curbside and drop-off recycling programs have reintroduced #5 rigid plastic recycling, films and bags remain difficult to recycle. It is recommended to check with local recycling programs or explore alternative disposal options, such as upcycling or reusing these containers.
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PP is hard, heat-resistant, and has a high melting point
The number 5 plastic, also known as PP or polypropylene, is a type of plastic that is hard, heat-resistant, and has a high melting point. This makes it ideal for containers that need to hold hot liquids, such as yogurt cups, hummus tubs, and syrup and medicine bottles. It is also commonly used for single-use items like cutlery and lids for drink bottles. While PP is technically recyclable, it is not as widely accepted as some other types of plastic, such as #1 and #2.
Before 2018, number 5 plastics were widely accepted in both curbside and drop-off recycling centers. However, after China's National Sword policy was introduced in 2018, which stopped the acceptance of contaminated plastic waste for recycling, many recycling programs stopped accepting these plastics. In recent years, some curbside and drop-off programs have started to reintroduce #5 rigid plastic recycling, but films and bags remain a problem.
The numbers on plastic items indicate the type of resin used to produce the plastic and are not necessarily an indicator of whether or not something is recyclable. The number 5, in particular, indicates polypropylene, which, as mentioned, has a high melting point and is heat-resistant. This makes it a popular choice for containers that need to hold hot liquids, as it can withstand higher temperatures without warping or leaching chemicals.
While PP can be recycled, it is important to check with your local recycling facility or program to see if they accept it. Some curbside recycling programs do accept PP, but it is always good to check beforehand. Additionally, it is important to ensure that any PP items you wish to recycle are empty and free of food residue, as this can contaminate other recyclables and be difficult and costly to remove during the recycling process.
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PP is often used for containers that hold hot liquids
Plastic recycling is a complex process, and the recyclability of plastics depends on various factors. The number 5 inside a triangle on plastic products, often referred to as PP, indicates polypropylene. This type of plastic is known for its hardness and heat resistance, making it suitable for containers that hold hot liquids. PP has a high melting point, which is why it is often chosen for containers designed to hold hot substances.
PP is commonly used in the production of various household items, including prescription medicine bottles, yoghurt containers, hummus tubs, single-use cutlery, and packaging for personal care products such as deodorant, lotion, or shampoo. Its versatility and durability make it a popular choice for many applications.
While PP has valuable characteristics, its recyclability has been a challenge. Before 2018, number 5 plastics were widely accepted in both curbside and drop-off recycling centres. However, after China's National Sword policy was implemented, which involved stopping the acceptance of contaminated plastic waste, the recyclability of PP became more limited.
Today, some curbside and drop-off programs are reintroducing the recycling of number 5 rigid plastics, but films and bags remain challenging to recycle. It is important to check with local recycling facilities, as their accepted materials may vary. Additionally, it is recommended to avoid plastics that cannot be recycled in regular curbside or drop-off locations, such as PP, and opt for alternative packaging materials or bulk purchases to minimise plastic waste.
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Curbside recycling programs may or may not accept PP
The number 5 plastic, also known as PP or polypropylene, is a type of plastic that is hard and heat resistant. It has a high melting point, which is why it is often used for containers that hold hot liquids. PP is used in various products, including prescription medicine bottles, yoghurt cups, hummus tubs, single-use cutlery, and some packaging for personal care products like deodorant, lotion, or shampoo. Before 2018, when China stopped accepting contaminated plastic waste for recycling, it was widely accepted by curbside and drop-off recycling centres. However, since then, some curbside and drop-off programs have reintroduced number 5 rigid plastic recycling, but films and bags remain challenging to recycle.
The recyclability of PP through curbside programs also depends on the shape of the item. Curbside recycling typically accepts bottles, tubs, buckets, and jugs, as these shapes are easier to sort and are more desirable for recycling companies. Other shapes, such as plastic bags, blister packaging, or plastic wrap, are often not accepted in curbside recycling due to their potential to cause issues in the recycling machinery. These items may be accepted at specialized drop-off locations or stores that collect and recycle specific types of plastic.
It is worth noting that, while curbside recycling programs may not always accept PP, there are alternative options for recycling this material. Some recycling businesses offer drop-off services for various plastics, including PP. Additionally, companies like TerraCycle offer free and fee-based recycling programs for a range of products, including those made from PP. These programs provide boxes that can be filled and mailed back to TerraCycle for recycling, ensuring that PP items can be responsibly disposed of even if they are not accepted by your local curbside program.
Overall, the acceptance of PP in curbside recycling programs varies depending on the region and the capabilities of the local recycling facilities. It is essential to stay informed about the specific guidelines and any updates or changes in your area. Additionally, reducing the use of single-use plastics, reusing or upcycling PP containers, and advocating for earth-friendly packaging are all important steps towards a more sustainable future.
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PP containers can be reused or upcycled
PP, or polypropylene, is a type of plastic that is hard, heat-resistant, and has a high melting point. It is often used in the production of containers that hold hot liquids, such as yogurt cups, hummus tubs, and syrup and medicine bottles. It is also used for single-use items like cutlery and personal care product packaging. While PP containers can be challenging to recycle, they can be reused or upcycled in a variety of ways.
One option is to reuse PP containers for storage or organization. For example, #5 plastic yogurt containers can be washed and reused to store items such as office supplies, craft materials, or small toys. PP containers can also be upcycled into creative projects, such as suncatchers made from clear lids or a plastic bottle bowling game.
It's important to note that PP containers should be thoroughly cleaned before reuse, especially if they previously held food products. Leftover food residue or cleaning solutions can contaminate other items during the recycling process and may be challenging to remove at processing facilities. Therefore, it is recommended to give PP containers a quick wipe or rinse before reusing or recycling them.
While PP containers can be reused or upcycled, it is also worth exploring alternative options to reduce plastic waste. For example, instead of purchasing yogurt in PP containers, consider buying yogurt in bulk or in glass containers. This simple switch can help reduce the amount of PP plastic waste and contribute to a more sustainable lifestyle.
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Frequently asked questions
The number 5 on plastic containers, often found within a triangle, indicates that the plastic is made of polypropylene, also known as PP.
#5 plastic containers are technically recyclable. However, they are not accepted by all recycling programs. Before China's National Sword policy was introduced in 2018, #5 plastics were widely accepted in both curbside and drop-off recycling centres.
You should check with your local recycling facility or municipal guidelines to see if #5 plastics are accepted. If they are not accepted, you can look for ways to reuse or upcycle your plastic containers.
#5 plastics are often used in prescription medicine bottles, yoghurt cups, hummus tubs, single-use cutlery, and some packaging for personal care products like deodorant, lotion, or shampoo.










































