[pianotech] Teflon accused again

Barrie Heaton piano at a440.co.uk
Mon Dec 24 10:09:26 MST 2012


In message 
<1356139906.47038.YahooMailMobile at web142605.mail.bf1.yahoo.com>, 
Euphonious Thumpe <lclgcnp at yahoo.com> writes
>Well, at risk of "here we go again" I will just say one thing. (And 
>ONLY one!) The objections to Teflon are not merely due to the unknown 
>effects on users. They are because of the VERY implicating evidence 
>regarding manufacturing, in which HORRIBLY deformed children ( look 
>online, if you think you can take it!) were born to women working in 
>its production.
>
>Peace,
>Thumpe
>

 From the BBC

It's on saucepans, clothing, even buildings, but now Teflon - the famed 
non-stick chemical - is at the centre of a slippery controversy about 
cancer and birth defects.

Since its invention in the 1930s, amateur and professional cooks alike 
will acknowledge their debt of gratitude to Teflon. Over the years, the 
non-stick coating on pots and pans has helped turn out countless perfect 
fried eggs and cheese soufflés.

But for how much longer? Environmentalists have called for the 
withdrawal of a chemical which is a key ingredient in the manufacture of 
Teflon because of growing health fears.

Perfluorooctanoic Acid, PFOA for short, is a synthetic chemical used in 
the manufacture of advanced plastics including Teflon.

Today, all new man-made chemicals must undergo rigorous testing to be 
marketed in Europe. But PFOA is one of 100,000 or so chemicals which 
avoided the test because they were invented before 1981.

Teflon was invented in the 1930s by DuPont, the US firm which uses it 
today to make non-stick cookware, and also markets it as a coating for 
clothes and carpets.

Bucky Bailey
Bucky Bailey's mother became pregnant while working at DuPont's West 
Virginia plant
The company recently agreed to an out-of-court settlement to a class 
action lawsuit brought by around 50,000 residents who lived near its 
West Virginia plant.

The residents, who lived along the Ohio river south of Parkersburg, West 
Virginia, claimed the company had contaminated local water supplies with 
PFOA, which they alleged was linked to birth defects and other health 
hazards.

Among the plaintiffs was Bucky Bailey, who was born with a single 
nostril and a deformed face. His mother fell pregnant with him while 
working at DuPont's Parkersburg plant.

DuPont eventually agreed to pay $50m in cash to the plaintiffs, plus 
$22m in legal costs. The company also agreed to spend $10m on special 
water treatment facilities to filter out PFOA.

But, crucially, DuPont did not accept liability and maintained PFOA did 
not pose any danger to the public.

Water tests

"We want to make very clear that settling this lawsuit in no way implies 
any admission of liability on DuPont's part," says DuPont lawyer Stacey 
J Mobley.


DuPont have some brilliant scientists.. I don't believe they couldn't 
find an alternative
Dr Tim Kropp

At the same time, DuPont is facing another multi-million dollar lawsuit 
from the US environmental watchdog for allegedly failing to disclose the 
results of secret water tests in 1984.

It faces being fined $27,000 for every day since 1984.

Now, environmental campaigners on both sides of the Atlantic want to ban 
the controversial chemical.

"PFOA accumulates in the body and in the environment and studies on 
animals suggest a link to birth defects. We are very concerned about 
it," says Karine Pellaumail, from Friends of the Earth.

Dr Tim Kropp, a toxicologist working for the Environmental Working Group 
in the US says tests carried out by the US firm 3M suggested high doses 
of PFOA led to various forms of cancer in rats.

"DuPont have some brilliant scientists and I don't believe that they 
couldn't find an alternative if they put their minds to it," says Dr 
Kropp.

'Respond with compassion'

But DuPont disagrees. "There is no evidence that PFOA is harmful," says 
its director of media relations, Clifton Webb. "We are very confident 
that there are no health effects associated with the public's exposure 
to PFOA at the levels we have seen."


FACTS ABOUT TEFLON
Non-stick frying pan
Invented in US in 1930s
1946, first marketed by DuPont as Teflon
Has the lowest coefficient of friction of any solid material known to 
man
Found on pots, pans, overcoats, bullets and pine lining
But, he accepts that, in high enough doses, PFOA could be carcinogenic 
to animals.

As for those who had suffered birth defects, such as Bucky Bailey, he 
says the firm would "respond with compassion and concern, but they are 
not related to exposure to PFOA".

According to 3M's tests, PFOA was present in five parts per billion in 
the bloodstream, says Mr Webb.

Workers exposed to it were likely to have a level "thousands of times 
higher", he concedes, but there was no evidence it was doing them harm.

As for substitutes, the company has identified around 100 possible 
alternatives to PFOA - which is used as a processing aid in Teflon - but 
none could produce the sufficient "quantity or quality" required. Cost, 
he says, is not an issue.

Last year the American Environmental Protection Agency (EPA) launched an 
investigation into the chemical's effects, a study which is being 
watched by the British government.

It acknowledges "considerable scientific uncertainties" on the issue but 
says there is no reason anyone should stop using Teflon products.

But the EPA is expected to submit a more comprehensive risk analysis 
next month.

Last year the British government called for a related chemical, 
perfluorooctane sulphonate (PFOS), to be withdrawn. It followed 3M's 
decision to abolish the chemical from its well-known Scotchgard products 
after health concerns were raised.

"PFOA is related to it but nowhere near as much research has been done 
into it and we are awaiting the outcome of the EPA's research," says a 
spokesman for Defra.

Others are seeking a more restrained response. Professor Scott Mabury, 
head of environmental chemistry at the University of Toronto, says a ban 
on PFOA would be "Draconian" and the answer was to go back to the 
factory and make sure residual levels of the polluting chemicals were 
removed in the production process.



Not good reading

Barrie

-- 
Barrie Heaton      PGP key on request           http://www.a440.co.uk/
AcryliKey Ivory Repair System UK ©              http://www.acrylikey.co.uk/
Piano Castors                                   http://www.piano-safety-
castors.co.uk/



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