What do plastic recycling codes 1 to 7 mean? Which plastics are healthy and which ones should we stay away from? Explore our detailed recycling guide.
What are Plastic Recycling Codes?
You may have seen a number in a small triangle at the bottom of a water bottle, yogurt container or detergent box you bought while shopping. These numbersrecycling codesIt is called.
in 1988The Society of the Plastics Industry (SPI)This system, developed by, was created to classify plastic types and facilitate the recycling process.
Each number indicates what type of plastic the plastic is produced from, whether it is suitable for recycling and its safety for health.
Number 1: PET or PETE (Polyethylene Terephthalate)
PET is one of the most used types of plastic.
- Area of use:Water bottles, soft drink cans, ready-made food packaging.
- Advantage:It is lightweight, transparent and considered safe for disposable foods.
- Disadvantage:It is difficult to clean when reused and may cause bacterial growth.
- Health effect:It should not be used in the microwave or dishwasher.
👉 Tip:Avoid reusing PET bottles repeatedly.
Number 2: HDPE (High Density Polyethylene)
HDPE is considered one of the safest plastics.
- Area of use:Milk bottles, detergent boxes, toys, grocery bags.
- Advantage:It is safe for contact with food and does not leak chemicals.
- Disadvantage:It is often used in disposable products.
- Health effect:It is the type of plastic most preferred by experts.
👉 Tip:You can use HDPE packaged products safely.
Number 3: PVC (Polyvinyl Chloride)
PVC is one of the most risky plastics in terms of health.
- Area of use:Food containers, toys, pipes.
- Advantage:It is flexible and durable.
- Disadvantage:It may leach harmful chemicals into food.
- Health effect:It should not come into contact with drinking water or food.
👉 Tip:Avoid using products containing PVC, especially in the kitchen.
Number 4: LDPE (Low Density Polyethylene)
LDPE is generally considered harmless.
- Area of use:Garbage bags, storage containers, some food packaging.
- Advantage:It is light, flexible and has low chemical release.
- Disadvantage:It is not used in water bottle production.
- Health effect:In some cases, there may be a risk of chemical contamination of food.
👉 Tip:Use LDPE packaged products for short periods of time.
Number 5: PP (Polypropylene)
PP,safest plasticstands out as.
- Area of use:Yogurt containers, plastic lids, baby products.
- Advantage:It is resistant to high temperatures and does not contaminate food with chemicals.
- Disadvantage:It is slightly more expensive than other plastics.
- Health effect:Ideal for use with hot foods and drinks.
👉 Tip:You can safely choose PP coded plastics.
Number 6: PS (Polystyrene)
PS is a cheap and lightweight plastic, but it is risky.
- Area of use:Disposable plates, cups, egg cartons.
- Advantage:Low cost and common.
- Disadvantage:When heated, it may emit carcinogenic compounds.
- Health effect:Long-term use is definitely not recommended.
👉 Tip:If possible, do not use Styrofoam (PS) plates and glasses.
Number 7: Others (BPA, PC and Mixed Plastic)
This group includes the riskiest plastics.
- Area of use:Sports bottles, feeding bottles, storage containers.
- Advantage:It is durable and long-lasting.
- Disadvantage:It is not suitable for recycling.
- Health effect:Because it contains BPA, it may disrupt hormone balance.
👉 Tip:Choose BPA-free products, especially for babies.
Tips for Choosing Healthy Plastic
- Do not reuse PET bottles.
- Choose HDPE and PP coded plastics.
- Stay away from products containing PVC, PS and BPA.
- Use alternative materials such as glass, stainless steel or bamboo.
Knowing plastic recycling codes is critical not only for the environment but also for our health. These codes, 1–7, help us understand which plastic is safe and which is risky. Especially in plastics that come into contact with food and beveragesHDPE (2)AndPP (5)They are safe choices.
👉 By making more conscious choicescan protect your health, as wellYou can contribute to the environment.
Frequently Asked Questions (FAQ)
1. Why are plastic recycling codes important?Plastic codes indicate the type of plastic, its recycling status and health safety.
2. Which type of plastic is the safest?Number 2 (HDPE) and number 5 (PP) are the safest plastics for use with food.
3. Can PET bottles be reused?No. PET bottles are produced for single use. There is a risk of bacterial growth and chemical leakage when reused.
4. Why is PVC considered harmful?PVC may leak the chemicals it contains into food or water, so contact with food is not recommended.
5. What is BPA and why is it harmful?BPA (Bisphenol A) is a chemical that can disrupt the hormonal system. Its presence, especially in feeding bottles and storage containers, is risky for health.
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Sources
ASTM D7611 resin identification code — The number identifies the resin and is not a universal recycling instruction.
US EPA guidance on common recyclables — Local programs decide which plastic items they accept.