Bisphenol A Epoxy Cans
Bisphenol A (BPA) is a key building block of epoxy resins, commonly used as an inner coating on metal food and beverage to prevent corrosion of the can and contamination of food and beverages with dissolved metals. In addition, the coating helps to prevent canned foods from becoming tainted or spoiled by bacterial contamination. These epoxy can coatings are essentially chemically inert and have been used safely for more than 40 years. In addition to protecting contents from spoilage, these coatings make it possible for food products to maintain their quality and taste, while extending shelf life.
In 1995, the Society of the Plastics Industry, Inc. (SPI) initiated a study to measure the migration of BPA from can coatings. Based on the results of the SPI study, the estimated dietary intake of BPA from can coatings is less than 0.00011 milligrams per kilogram body weight per day. This level is more than 450 times lower than the maximum acceptable or "reference" dose for BPA of 0.05 milligrams per kilogram body weight per day established by the U.S. Environmental Protection Agency.
Stated another way, an average adult would have to ingest more than 230 kilograms (about 500 pounds) of canned food and beverages every day for an entire lifetime to exceed the safe level of BPA set by the U.S. Environmental Protection Agency.
In 2002, the European Commission's Scientific Committee on Food (SCF) further confirmed the safety of BPA epoxy resin can coatings. The SCF estimated total dietary intake of BPA from all food contact sources, including epoxy resin coatings, to be in the range of 0.00048 to 0.0016 milligrams per kilogram body weight per day, which is below the Tolerable Daily Intake set by the SCF of 0.01 milligrams per kilogram body weight per day.
Consequently, the potential human exposure to BPA from can coatings is minimal and poses no known risk to human health. Bisphenol A epoxy can coatings have been and continue to be recognized as safe by the U.S. Food and Drug Administration, the U.K. Food Standards Agency, the EU Scientific Committee on Food and other government bodies worldwide.
Learn more about BPA epoxy cans.