Lori Bongiorno

Safest plastics for food and beverages

Some plastics are safer to eat and drink from than others. Here's a quick guide to help you make informed choices. If you want to dig deeper, take a look at the Institute for Agriculture and Trade Policy's Smart Plastics Guide (PDF). 

It's worth avoiding the following plastics when you can. You can identify a plastic by looking at the recycling code number that appears inside a triangle at the bottom of many containers.

Resin code #3

Polyvinyl chloride (PVC) can leach phthalates, known male reproductive toxicants. It can be identified by code 3. One way to avoid it in the kitchen is by choosing plastic wrap made from polyethylene rather than PVC. If a box is not labeled, find a brand that is or call the manufacturer.

Resin code #6

Polystyrene is used in Styrofoam products. It may leach styrene (a neurotoxin) when it comes into contact with hot, acidic, or fatty foods. It's marked with recycling code 6.

Resin code #7

Polycarbonate can leach bisphenol-A (BPA), an endocrine disruptor associated with a long list of health concerns. Baby bottles, "sippy" cups, 5-gallon water jugs, and reusable beverage bottles are typically made out of this plastic. Products may be marked with recycling code 7 and/or the letters "PC." It’s important to note that some containers that aren’t made from polycarbonate may also be marked with a code 7 because the category also includes any plastic that doesn’t fit into the 1 to 6 recycling code categories.

In response to the widespread concerns about BPA, baby bottles and other items made from alternative materials are springing up. Experts say stainless steel is your best bet for reusable water bottles right now. ThinkSport and Klean Kanteen are two widely available brands.

The following plastics are considered safest for food storage. Glass and stainless steel are also good options.

Resin code #1

Polyethylene terephthalate ethylene (PETE), code 1.

 

Resin code #2

High-density polyethylene (HDPE), code 2.

 

Resin code #4

Low-density polyethylene (LDPE), code 4.

 

Resin code #5

Polypropylene (PP), code 5.



Here are some tips for using all plastics safely:

  • Don't microwave food in plastic containers. Chemicals are more likely to leach out when plastic is heated. "Microwaveable plastic" doesn't guarantee that chemicals won't leach. Cover foods in the microwave with wax paper or a plate. If you do use plastic wrap, then make sure it doesn't touch the food.
  • Avoid putting hot foods in plastic containers. Let leftovers cool off before storing them in plastic.
  • Take good care of plastics by not washing them with harsh chemicals, and dispose of scratched and worn containers. Research has shown that older, scratched items will leach more, says Kathleen Schuler at the Institute for Agricultural and Trade Policy. (Don't put them in the dishwasher if you want to be completely risk-averse, she suggests.)
Environmental journalist Lori Bongiorno shares green-living tips and product reviews with Yahoo! Green's users. Send Lori a question or suggestion for potential use in a future column. Her book, Green Greener Greenest: A Practical Guide to Making Eco-smart Choices a Part of Your Life is available on Yahoo! Shopping.

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comments from our community

Showing 16 - 30 of 147 comments

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  • Posted by Todd G Mon Nov 10, 2008 3:53am PST
    A really one sided article which can make one very concerned if taken at face value. Be careful with this type of journalism and get all the facts if you really want to understand. These products are tested more than virtually any product on the market and have proven to be very safe. Use common sense - Look around at all the products made of plastic....ask yourself, do they really pose a hazardous situation? If you really think so, based on data, then ask yourself what the next best alternative is. You can start by discontinuing the use of your cell phone and computer because the keyboard plastic will leach into your skin...if you follow the author's line of reasoning. Stop the madness.
    Report Abuse
  • Posted by Aaron Mon Nov 10, 2008 3:54am PST
    tlove1953 has a good point. Why do they still make these plastics if there are safer alternatives? Also in my area we can't recycle 3,6, or 7 types of plastic. I wish the article would have mentioned plant based plastics, like those made at http://www.natureworksllc.com/Product-And-Applications.aspx
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  • Posted by runnah mae Mon Nov 10, 2008 3:54am PST
    can u explain it further and what those words means?
    Report Abuse
  • Posted by LisaN Mon Nov 10, 2008 3:55am PST
    uggg! When I think about how many times I made Roman Noodles in a plastic bowl in the microwave as a kid-- well.. no wonder my thyroid is enlarged.
    Report Abuse
  • Posted by ankushb Mon Nov 10, 2008 3:56am PST
    this is just crazzy..
    Report Abuse
  • Posted by nstacorp Mon Nov 10, 2008 3:57am PST
    Thanks a lot as a information given.
    Report Abuse
  • Posted by arshad Mon Nov 10, 2008 3:57am PST
    very nice!
    Report Abuse
  • Posted by Twinfox Mon Nov 10, 2008 4:01am PST
    They just need to take them off the market. Use glass and recycle. Glass does break but they can put some kind of grip (plastic coating) on the outside to help it be stronger.
    Report Abuse
  • Posted by Ameylee Mon Nov 10, 2008 4:02am PST
    I am caught between a rock and a hard place. I live in the Phila. area and we have the choice of bottled water or public water that has been found to contain viagra, anti-depressants, and god knows what other mediines that are in the water!
    Report Abuse
  • Posted by lj071361 Mon Nov 10, 2008 4:08am PST
    We pay $165.00 + for a galon of "cheap" bottled water that may be killing us when we could run it out of the tap into old-fashioned glass for pennies. Young people wonder why they can not afford things this is one reason why.
    Report Abuse
  • Posted by Sherrie S Mon Nov 10, 2008 4:08am PST
    Stop making it....just like cigarettes...are they trying to kill us?
    Report Abuse
  • Posted by zipe Mon Nov 10, 2008 4:10am PST
    good job thanks!!
    Report Abuse
  • Posted by LB Mon Nov 10, 2008 4:10am PST
    Btw, PVC is what ALOT of our piping is...you know, PVC pipes?
    Report Abuse
  • Posted by jofil Mon Nov 10, 2008 4:11am PST
    thank you so much in your effort of doing this this information "SAFEST PLASTIC" because I'm really confuse about it.
    Report Abuse
  • Posted by Frank A Mon Nov 10, 2008 4:11am PST
    Ca.Citys are great for putting contaminated water in our homes. Buy Filters.
    Report Abuse

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