Joffrey All told, according to Paustenbach’s estimate, between 1951 and 2003 the West Virginia plant eventually spread nearly 2.5 million pounds of the chemical into the area around Parkersburg. On retrouve également le Téflon dans la fabrication de matériels de laboratoire comme les béchers et les ballons. Dès que l’aménagement de la zone fut fini, DuPont commença à rejeter du PFOA, substance toxique utilisée dans la production du Téflon, dans la rivière Ohio. In some ways, C8 already is the tobacco of the chemical industry — a substance whose health effects were the subject of a decades-long corporate cover-up. Alors, dangereux ou pas ? The trouble was that the compound – which has since been linked to a variety of health risks including cancer, liver disease, developmental problems, and thyroid disease – escapes into the air easily. That doesn’t sound like a problem. Sa constante diélectrique relative est alors de l'ordre de 2,1 et la tangente de son angle de perte de l'ordre de 10−4 à 10 GHz[réf. Le tétra-fluoroéthylène, cela ne vous dit certainement rien. The 20-year legal battle with DuPont that started with one West Virginia farmer . Thanks for contacting us. The law does require that the EPA keep a current list of all chemicals used commercially in the US, but it does not require that the chemicals be tested for environmental or human health impacts. D’abord, le problème vient de la chauffe du Téflon. Other times, he’s somehow inexplicably back at work in the lab. In 2011 and 2012, after seven years of research, the science panel found that C8 was “more likely than not” linked to ulcerative colitis — Wamsley’s condition — as well as to high cholesterol; pregnancy-induced hypertension; thyroid disease; testicular cancer; and kidney cancer. Il anticipe alors un marché pour son activité de fabrication de poudre à canon. But Karrh and others decided against the project, which was predicted to cost $45,000. DuPont scientists then conducted tests on humans, asking a group of volunteers to smoke cigarettes laced with C8. Today, there are more than 85,000 industrial chemicals in commercial use in the US – roughly 2,000 new chemicals are introduced every year in the US – but federal regulators have so far required only a tiny percentage of these to undergo any safety testing. The company funds its own safety-testing laboratory – the Haskell Laboratory of Industrial Toxicology – in part to screen workers for signs of illnesses that might be tied to DuPont products. Although DuPont no longer uses C8, fully removing the chemical from all the bodies of water and bloodstreams it pollutes is now impossible. “I mean, it was [called] the Heckert-Eckhardt bill,” Steven D. Jellinek, the EPA’s first-ever assistant administrator for toxic substances, told the Chemical Heritage Foundation’s Oral History Project, referring to Richard Heckert, then a DuPont vice-president and the chair of the Manufacturing Chemists Association. Mais le revêtement antiadhésif est aujourd’hui dans le viseur des autorités sanitaires: un composant du revêtement miracle, marque déposée par la multinationale américaine DuPont, est soupçonné d’affecter gravement la santé humaine. ), “I’ve been at it 16 years, if that tells you anything,” Joe Kiger, a local gym teacher and lead plaintiff in the original 2005 class action suit, told the Journal. DuPont est accusé d’être probablement à l’origine d’un énorme scandale sanitaire dont on n’a pas encore mesuré les effets exacts. Later that year, Karrh and his colleagues began reviewing employee medical records and measuring the level of C8 in the blood of the company’s own workers in Parkersburg, as well as at another DuPont plant in Deepwater, New Jersey, where the company had been using C8 and related chemicals since the 1950s. Le Téflon (PTFE) à proprement parler ne serait pas cancérigène, d’après l’American Cancer Society.