Kitchen Plastics Guide: How to Identify Safe Food Storage Products

Share this post

By Rebecca Taggart

Last month we wrote about plastics and the potential health hazards some can present for food preparation and storage because of the inclusion of the chemicals biphenyl-A (BPA) and phthalates. Here we show you ways to identify plastics to help determine which are safe and resources on popular brands of food storage products.

Look for the Triangle

Look for the recycle triangle on the bottom of plastic containers, lids, and other plastic items that come into contact with food.  Inside the recycle triangle is a number. Only numbers 3, 6, and sometimes 7 contain BPA, which research has shown may be a cause for health concerns, especially for infants and children.   Numbers 1, 2, 4, and 5 have no known health issues. For more information about plastic designations, recycle codes, and the types of products made with each plastic resin, visit the Plastic Packaging Resins identification chart at the American Chemistry Council website.

Considered Safe:

Plastic Codes 1, 2, 4, 5

It is recommended to not microwave any kind of plastic and to wash them by hand instead of in the dishwasher.

Food Storage Products

Most company websites provide information about what plastics and resins their products’ contain. Many well-known brands have begun to produce BPA-free and/or phthalate-free food storage products.

Glad’s website states that none of its food storage containers and cling wraps contain BPA or phthalates, according to a 2008 declaration.

SC Johnson also states on its and websites that their bags, wraps, and containers do not contain BPA or dioxins. The sites do not mention phthalates content.

Rubbermaid has a page on their website to help consumers identify which containers contain BPA. They are introducing a “BPA-free” logo on the bottom of new products that do not contain the chemical.   The website claims all products made from January, 2010 onwards are BPA-free, and do not contain dioxins or phthalates.

Tupperware claims that less than 10% of their products contain BPA, and that they traditionally have not included the recycle triangle because their products come with lifetime guarantees. According to their website, they are going to add the triangle to future products and are finding alternatives for the BPA-containing plastics they have used in the past. They offer a 2010 guide to the types of plastic materials used in their products. The website does not mention phthalates.


Subscribe to the WEEKLY BITE

* indicates required


Recent Diet and Health articles:

Don’t let plantar fasciitis pain break your stride
June 11, 2019
How to make sure you’re getting enough iron in your diet
April 11, 2019
How to beat the winter blues
January 17, 2019
5 techniques for New Year’s resolutions you’ll keep
December 27, 2018
How to practice healthy holiday eating at the office
November 13, 2018
Simple ways to keep your skin safe
July 17, 2018
Everything you need to stay safe from ticks
July 5, 2018
Zero Balancing may be the best bodywork you’ve never heard of
July 3, 2018
Five healthy food trends to explore
April 17, 2018
Creating space for social connections at work is good for health and good for business.
February 15, 2018

More recent articles:

Summer muffin recipe
July 18, 2019
Assumptions can harm both recruiters and job seekers
July 16, 2019
Simple summer salad dressing recipes
July 11, 2019
Summer fruit varieties and when you’ll be seeing them
July 9, 2019
Easy summer pasta recipe
July 4, 2019
How to create a dress code that works all year
July 2, 2019
More employers are getting serious about time off
June 27, 2019
Two Easy Recipes for Canning Stone Fruit
June 25, 2019
The health benefits of honeydew melon
June 20, 2019
The delicate flavors of white peaches and nectarines
June 13, 2019

About Us

Our online magazine offers a taste of workplace culture, trends, and healthy living. It features recipes for easy, delicious work meals and tips on quick office workouts. It's also an opportunity to learn about our GoodWorks program, which helps those in need in our communities and supports small, sustainable farms.