The Teflon® trademark was coined by DuPont and registered in 1945; the first
products were sold commercially under the trademark beginning in 1946.
Applications and product innovations snowballed quickly. Marketed as non-stick and convenient, the term "Teflon"
is now a household name. The nonstick pans, many of which
are manufactured by DuPont, are a popular choice.
On May 16, 2000, the 3M corporation stunned the rest of the chemical industry
with an unexpected announcement: It had decided to stop producing a family of
compounds used in Scotchgard, Teflon, and a host of other consumer products.
Saying that the "perfluorochemicals" it had manufactured for half a century had
been found to persist in human blood and wildlife, 3M portrayed its move as that
of a conscientious corporate citizen. Read
more.
Avian veterinarians have known for decades
non-stick cookware can produce fumes that are highly toxic to birds. In
a single year a Chicago veterinarian documented 296 bird deaths involving non-stick cookware.
In "Teflon toxicosis," as the bird poisonings are called, the lungs of exposed birds
hemorrhage and fill with fluid, leading to suffocation.
Gore-tex®, SilverStone® and Teflon® are registered trademarks of Dupont Chemical
Company. Stainmaster® and Scotchgard® are the registered trademarks of 3M.
Dupont Chemical Company and 3M do not sponsor or endorse this report, but you
can
See
more at the EPA website.
Industrial uses for Teflon® fluoropolymers includes the following application
areas: architectural, fabrics, automotive uses, cabling materials, food
processing, pharmaceutical and biotech manufacturing, and semiconductor
manufacturing. Products include industrial and medical tubing, , films, chemical linings, coatings
on electrical insulation, fabrics, and metals,electronic data
insulation and telecommunication.
U.S. Urged to Put Warning Labels on Non-Stick Cookware
News Source: Reuters Published Date: May 15, 2003
The FDA approved Teflon® for contact with food in 1960 based on a food
frying study that found higher levels of Teflon® chemicals in hamburger cooked on
heat-aged and old pans. At the time, FDA judged these levels to be of little
health significance.
The Environmental Working Group asked the
Consumer Product Safety Commission to require manufactures of cookware to place
warning labels on their products that caution consumers of the potential health
risks of the non-stick coating.
EPA says it doesn't know enough about the compound to call it a human
health hazard. As a result, DuPont continues to make products with PFOA and C8
ammonium salt. DuPont is now the sole PFOA manufacturer in the U.S. "The government has not assessed the safety of non-stick cookware. says John Thomas, of the division of
regulatory guidance at FDA's Center for Food Safety and Applied Nutrition.
"You won't find a
regulation anywhere on the books that specifically addresses cookware."
But, Thomas adds, when a type of cookware raises safety concerns, FDA gets
involved.
The CPSC, in denying the Environmental Working Group’s petition to apply warning
labels to nonstick coated cookware, said the petition did not have sufficient
information to support the group’s claim that these coatings “have the ability
to cause substantial injury or illness to a person through reasonably
foreseeable handling or use” and that it had “not established whether humans
will experience adverse health effects when nonstick coated cookware is used at
normal cooking temperatures."
According to a study by the advocacy
group, non-stick pots and pans could reach 700 degrees Fahrenheit (370
C) in 3-5 minutes, releasing 15 harmful gases and chemicals, including two
carcinogens, two global pollutants, and MFA, a chemical
lethal to humans at low doses. Non-stick coatings break down to a
chemical warfare agent known as PFIB, and a chemical analog of the WWII nerve
gas, phosgene.
DuPont acknowledges that the fumes given off by non-stick
coatings can also sicken people, in a condition called
"polymer fume fever", which can be erroneously diagnosed as the
common flu. No one has never studied the incidence of illness among
users of the billions of non-stick pots and pans sold around the world, or the long-term effects from the sickness.
While DuPont acknowledges that its nonstick coatings begin to deteriorate when the
cookware reaches about 500 degrees, it notes that those temperatures are higher
than typical cooking heats. And while it admits that birds may be harmed by
the fumes, the company maintains that its pans are safe under
normal use.
Non-stick pans have never been meant for high-heat cooking,
as the instructions on any pan label will show. "We recommend cooking using coated non-stick cookware at
low to medium heat," says Dupont's Rich Angiullo. "We know (our product) can
withstand temperatures up to 500 F, well above any of the recommended
temperatures for frying or baking."
But recommendations and reality don't always coincide, says
Environmental Working Group president Ken Cook. "We're still searching for the
person who has never left a pan on a stove top and had it get real hot." Engineers with Underwriters Laboratories say that all
UL-certified electric ranges should bring a pan to 475 degrees when the knob is
turned to two-thirds high, and that maximum heat would probably exceed 600-650
degrees.
Teflon® has been involved in the U.S. space program since the program's
infancy. When astronaut Neil Armstrong took his historic "giant leap for
mankind" in 1969, the moon module included numerous applications involving
Teflon® resin, including space suits and blankets, heat shields, insulation and
cargo hold liners.
Teflon® is used in many applications for computer chip manufacture because it
is very inert and non-reactive. It's used in filters to keep air clean, in chip
carriers, and virtually all tubing and piping in the semiconductor industry.
DuPont Teflon® is the dominant brand used in the industry and DuPont has
supplied Teflon® to that market since its inception.
As a fiber, Teflon® is used to manufacture socks that reduce friction and
blisters. Recently approved by the U.S. Food & Drug Administration., these are especially crucial for diabetics, people with circulatory
problems, geriatric needs, obesity and sensitive skin. It's also used in children's clothing, sportswear, bedding,
towels, shower curtains and upholstery. It's used in military
clothing and uniforms for school children and sports clothing. Major fashion designers and brands that use Teflon® fabric protector include:
Hugo Boss, Prada, Ralph Lauren, Nautica, Yeohlee, Kenneth Cole, Woolrich,
Pendleton, Koret, The Gap, J. Crew, L.L. Bean, Eddie Bauer, Robert Allen Beacon
Hill Fabrics and Lee Jofa Fabrics, among others. Technology based on Teflon® also is used to repel dirt and spills from DuPont
StainMaster® carpet.
Teflon® is used to coat fiberglass fabrics for permanent architectural
structures such as the Pontiac Silverdome in Detroit, Michigan, and the Orange
Bowl at Syracuse University in Syracuse, New York. Teflon® is in the Statue of Liberty in New York harbor as an insulator and
lubricator between the copper skin and the stainless steel skeleton. Teflon® in a composite sheet form with graphite is used for bearing pads in
the George Washington Bridge in New York State to prevent corrosion of the steel
plates.
Packaged food and fast food
containers are coated with PFCs to keep grease from soaking through the
packaging. PFCs are used in a wide variety of containers, including french fry
boxes, pizza boxes and microwave popcorn bags.
For now, the EPA says it's too early to advise consumers to toss out their
nonstick cookware. If you want to take precautions in the meantime, you could set aside your
nonstick pots and pans until the EPA has finished its study.
If you do use (non-stick) cookware, don't let it sit on the burner for long
before adding food. Doing so may permit the temperature to rise high enough to
emit chemical fumes. Avoid cooking at high temperatures with nonstick cookware. Use low to medium
temperatures instead. And don't forget to keep your pet birds out of the kitchen.
Here are some tips
from the EWG:
Phase out the use of non-stick cookware and other equipment
that is heated in your home. If you can afford to replace it now, do so. When
heated to high temperatures, Products with PFC
coatings emit fumes that can be harmful.
Do not use non-stick cookware in your home if you have pet birds.
In fact, avoid any kitchen equipment that contains non-stick
components that are heated to high temperature during use. Fumes from these
materials can quickly kill birds.
When you purchase furniture or carpet, decline optional treatments for stain
and dirt resistance, and find products that have not been pre-treated with
chemicals by questioning the retailers. Most of these chemical treatments
contain PFCs that might contaminate your home and family.
Avoid buying clothing that bears a label or other indication that it
has been coated for water, stain, or dirt repellency. Many of these coatings are
PFCs. By buying alternatives you will help shrink the PFC economy and the
associated global contamination.
Minimize packaged food and greasy fast foods in your diet. These can be held
in containers that are coated with PFCs to keep grease from soaking through the
packaging. PFCs are used in a wide variety of containers, including french fry
boxes, pizza boxes and microwave popcorn bags.
Avoid buying cosmetics and other personal care products with the phrase
"fluoro" or "perfluoro" on the ingredient list. Among products that might
contain PFCs are lotions, pressed powders, nail polish, and shaving cream.
The EWG review finds that PFCs have contaminated the
blood of;virtually every American, the environment
and wildlife, and supports EPA's;findings that the
associated chemicals presents health risks for women
;and girls. "These chemicals have been in use
for 50 years, they've found their;way into the body
of every American, and we're just now starting to understand
;the health effects. That means we need a better system
for testing industrial;chemicals' health effects --
before we permit their use," said EWG Senior;Scientist
Kris Thayer.;
Environmental Working Group (EWG) scientists spent the
last three years;reviewing 50,000 pages of regulatory
studies and government documents;obtained from EPA;
internal industry documents disclosed in ongoing;litigation;
and a growing body of independent studies on the toxicity
and;environmental occurrence of perfluorochemicals
(PFCs). The chemical,;abbreviated in scientific literature
as PFOA, is also known as C-8 at the;DuPont Company,
which manufactures it. A Canadian study in 2001;discovered
C8 was one of the chemicals released when Teflon is heated
;repeatedly. The EPA is still collecting data, and
it could be several months;before the agency concludes
its investigation. "We just don't have answers;right
now," says EPA spokesman David Deegan.
Although some exposures to PFCs are unavoidable,
there are two
differing attitudes about how new technology should be evaluated. Historically
in this country we've applied a risk-benefit analysis — do the potential
benefits of the technology outweigh the potential risks? Most businesses
evaluate their products on this basis.
Consumer advocates, environmentalists and the European
community, however, are turning toward something called the precautionary
principle. This is based on a German legal notion of the Vorsorgeprinzip,
literally the "forecaring principle". Iin everyday language: Better safe than sorry. It started in Germany when laws were
enacted to save forests by reducing the power plant emissions that cause acid
rain. Draft legislation will soon be released by the European Union to require that
over the next 11 years all chemicals be treated like new ones and be required to
undergo safety testing.
Chemicals of highest concern
because of their environmental infiltration, reproductive toxicity or
carcinogenicity will be treated like drugs, meaning the system will presume
they're dangerous and require applications for their use. The rules, if
approved, would go into effect in 2005.