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Teflon

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I'm just a dumb Chemical Engineer and don't get the logic. If the DuPont compound, "C8", is found to be a carcinogen and it is an raw material for Teflon, does this make Teflon a carcinogen also? If the logic holds, then ordinary table salt is deadly toxic since it is made from Chlorine - whose toxic properties are well defined and appreciated.

 
I don't think that's the point.

The point is if C8 is unallowed, Dupont can't make Teflon AT ALL, at least, not until an alternative process is brought online.

TTFN
 
IRstuff:

I wasn't referring to Unclesyd's comment. I was referring to what is being stated in the referenced article. They seem to be going in the logic I described.
 
Sorry, we must be reading different articles.

The article I read refers to Teflon just once:
C8 is a growing health concern nationwide, but is of particular importance in West Virginia. For more than 50 years, DuPont has used C8 at its Washington Works plant near Parkersburg to make Teflon and other products.

Nowhere did I read any inference that Teflon might be carcinogenic.

TTFN
 
Both scenarios were mentioned depending on the article and the writers interpretation of the announcement.
This was just one of the articles on Google news at the time I posted. All have a different slant on the problem with C8 and the EPA and company. The TV news mentioned and showed Teflon coated cookware along with all types of commentary concerning the by products of heating the coating and the possibility that C8 was carcinogen. On article said that nearly everyone had some C8 in their system.
Dupont has a nightmare on it's hands as you know what coming out of the wood work. I'll be we see the first ads tomorrow fishing for clients. C8+TFE+Carcinogen=$$$$$
 
Amazing that you can find entire articles referring to C8 but never mentioning what the heck it is!

C8 is listed as a "processing aid" used in the manufacture of fluoropolymers like PTFE and other fluoropolymers. It's a reference to a collection of compounds typified by perfluorooctanoic acid. The perfluorination results in incredible environmental persistence, and should also result in biological inertness, but I guess the latter point is under debate at the moment.

The elimination of PTFE as a gasket and seal material would have an enormous impact on industry. I can't imagine that the harm from this C8 group of compounds could ever match the harm that would result from using inferior sealing products in the equipment used to make virtually every other chemical compound on earth! If PTFE were to be banned, the industrial consequences would make the elimination of asbestos look like a mere hiccup!

 
Here is the type of reporting that causes confusion among the populace and joy among the lawyers. The lawyers love the headlines and the populace doesn’t quite understand the body of the report.

 
But at least it has a possible name for C8 = perfluoroOCTanoic acid [my emphasis]

TTFN
 
Since only the title is in serious error, I might argue that it's a case of science illiteracy as opposed to overt sensationalism.

Not clear that copywriters are sufficiently knowledgeable about Teflon to understand that C8 does not exist in its original form within Teflon.

TTFN
 
C-8 is a huge concern for the 70,000 residents of the Mid-Ohio Valley, where C-8 has been found in the ground water and drinking water supplies.

Local blood c-8 level test is schedule to begin next week.

Here is some information on the class-action lawsuit


Vita sine litteris mors est.
 
Ahh, The plot twists.
The WV Department of Environmental Protections was to issue a press release in March 2002, it however was killed after complaints from a DuPont lawyer.









Vita sine litteris mors est.
 
That article has a another possibility for C8: ammonium perfluorooctanoate

TTFN
 
Have any of you guys contacted a gastket manufacturer ?

Surely they would be aware of any possible impact on Teflon supply/production ? and probably address your concerns.
 
Taking my usual dark view of corprate strategy, surely du Pont would simply move production to a developing country with a more relaxed view of environmental pollution if the US regulators deemed that use of C-8 was no longer acceptable?


----------------------------------

If we learn from our mistakes,
I'm getting a great education!
 
Ha! 1st time I looked, I thought I read $fifty-eight...

Sounds like typical money-grubbing...

TTFN



 
That is absolutely insane. I think that if people understood that most of their household products were made with components that have been shown to cause cancer we would all be living in caves again. If you take any item, even the pen in your hand, I guarantee you that one of the ingredients or some chemical in the process has been shown to cause cancer.

Lawyers are trying to capitalize on the fact that Dupont has more money in surplus than the US government. This too shall pass.
 
The industrial hygenist here at work taught us about MSDS's by having us work through a list of nasty chemicals.

By the end of the hour, we were adapt at reading the PPE handling guidelines, precautions, chemical properties, human effects etc... then he revealed that each chemical was a constituent of tea.

It helped put things in perspective.

 
The problem with MSDS is that the information published in these may be inaccurate or incomplete. As with this case only a limited scientific study was preformed and none with exposure by consumption.

Since the early 1950s, DuPont has utilized a chemical compound known as ammonium perfluorooctanoate in its manufacturing of Teflon at its Washington Works plant in Wood County, West Virginia. Ammonium perfluorooctanoate is also commonly referred to as C-8.

C-8 was manufactured by the 3M Company, and sold it to DuPont. In May 2000, 3M ceased production of C8, because of concerns about its toxic, bioretentive, and animal carcinogenic properties. Since that time, DuPont is now producing C-8 in its plant located in Fayetteville, North Carolina.

In its Teflon manufacturing process, DuPont has discharged large quantities of C-8 as waste material into the air and water surrounding its Washington Works plant. Much of this waste containing C-8 has been disposed of in DuPont's Dry Run Landfill, its Letart Landfill, and discharged into the Ohio River. Detectible quantities of C-8 have been found in two water districts located in West Virginia and four water districts located in Ohio, and numerous private wells in these vicinities has been found to be contaminated with C-8 as well. C-8 is proven to be a hazardous, toxic substance. It has been linked with an increased incidence of prostate cancer in studies performed for 3M and is believed to be associated with other medical maladies in humans, including, but not limited to, breast cancer, bladder cancer, liver disease, and it is also suspected to cause certain types of birth defects.

DuPont set guideline for employee exposure within the Washington Works plant exposure via inhalation. The exposure to the residence via the public and private water system is many times the greater, only now is some relevant testing being preformed.. DuPont is paying residence $400 for completing a medical survey and have a blood sample drawn.

One of the earlier cases against DuPont (Washington Works Facility)… A mysterious wasting disease killed 280 cattle on farm near the Dry Run Landfill in the 1980s. The cause of the cattle deaths were never conclusively associated with chemical contamination from DuPont, but the company settled with the family for an undisclosed amount in light of the allegations. It was also claimed that family members who worked with the herd and lived near the property also began to fall sick with sinus and respiratory problems and skin and other cancers. It has also been reported that in 1984, just after DuPont started utilizing the Dry Run Landfill, , there were no minnows in the stream and there were deer carcasses lying around. When the family asked their attorneys to look into the cause of the illnesses and pursue action against DuPont, C8 was found.


Vita sine litteris mors est.
 
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