Electronics > Beginners
What is the white powder inside computer IEC power cords?
tooki:
--- Quote from: TheUnnamedNewbie on July 16, 2018, 04:38:02 pm ---
--- Quote from: IanMacdonald on July 16, 2018, 02:59:29 pm ---
--- Quote from: Cliff Matthews on July 15, 2018, 07:45:43 pm ---Where are you hiding? At least on this side of the pond, a few people want to split 4.7 billion in claims.
--- End quote ---
How on Earth does asbestos get into an ovary, anyway? Even if it did it has no chemical toxicity. The concern with it is physical, in that the fibres are completely insoluble and hence stay in the lungs as an irritant for a long time.
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Has anyone actually brought forth scientific evidence to back this claim?
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The closest I’ve found is this article, which includes a statement that asbestos and talc particles were found in the ovarian tissue: https://www.theguardian.com/business/2018/jul/13/johnson-johnson-ordered-to-pay-47bn-in-talc-powder-claim
--- Quote from: SparkyFX on July 16, 2018, 05:54:25 pm ---
--- Quote from: Benta on July 15, 2018, 07:36:58 pm ---It's talc. Why on earth would someone put asbestos in talc? It would defeat the purpose of reducing friction.
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Well both is a mineral, although one comes in form of a fibre. Wikipedia (german: https://de.wikipedia.org/wiki/Asbest#Entdeckung_der_Gesundheitsgefahren) states that talc containing asbest was at least some time used in cables and tire manufacturing and refers to TRGS 517 (also german, just listing talc containing asbest in cable-, tire and rubber goods manufacturing as possibly used).
Anyway the claim was that the baby powder caused ovary cancer. In case of asbest, the long time from exposure to development of cancer can be 20 years and usually you´d assume that there has to be a carcinogen. On the other hand... you can find the asbest fibres (which the body can not dissolve, therefore getting fibrous) in the middle of the tissue, i consider that a simple proof, maybe it just failed to proof that it was part of that powder.
How big the problem is, depends on the length of the fibre, because asbest < 5µm length, > 3µm diameter and length/width < 3:1 are not counted as asbest fibres per WHO, but rather asbest mineral. So the method of how this powder is ground probably also plays a role, as there are some ambigous definitions on which type of rock can contain asbest fibres because not all forms contain it.
I personally like to filter all this through the filter of my cigarette and try not to lick or inhale cables.
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I had the same thought as you: the fact that asbestos fiber was found in the ovary doesn’t prove that it came from the talc.
P.S. In English it’s “asbestos”, not “asbest” as in German. ;)
P.P.S. Make sure that cigarette isn’t an antique from the mid-50s, since they used to make ciggie filters out of asbestos, too!! :o (And not just any asbestos, it was blue asbestos, which is even worse than the common white one... :palm: )
David Hess:
--- Quote from: IanMacdonald on July 16, 2018, 02:59:29 pm ---How on Earth does asbestos get into an ovary, anyway? Even if it did it has no chemical toxicity. The concern with it is physical, in that the fibres are completely insoluble and hence stay in the lungs as an irritant for a long time.
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Consider where women might apply baby powder to themselves.
langwadt:
--- Quote from: David Hess on July 16, 2018, 06:53:37 pm ---
--- Quote from: IanMacdonald on July 16, 2018, 02:59:29 pm ---How on Earth does asbestos get into an ovary, anyway? Even if it did it has no chemical toxicity. The concern with it is physical, in that the fibres are completely insoluble and hence stay in the lungs as an irritant for a long time.
--- End quote ---
Consider where women might apply baby powder to themselves.
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I'm no MD but from there to the ovaries? what were they doing?
jpanhalt:
--- Quote ---I'm no MD but from there to the ovaries? what were they doing?
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You don't need to be an MD to read about the anatomy. There is no parietum (i.e., wall) between a female's ovaries, her vagina, or her skin. Ovaries --> fallopian tubes --> uterus --> vagina --> (you guess the rest) Or, just think of how babies and made and reverse it.
Gyro:
--- Quote from: langwadt on July 16, 2018, 08:21:25 pm ---
--- Quote from: David Hess on July 16, 2018, 06:53:37 pm ---
--- Quote from: IanMacdonald on July 16, 2018, 02:59:29 pm ---How on Earth does asbestos get into an ovary, anyway? Even if it did it has no chemical toxicity. The concern with it is physical, in that the fibres are completely insoluble and hence stay in the lungs as an irritant for a long time.
--- End quote ---
Consider where women might apply baby powder to themselves.
--- End quote ---
I'm no MD but from there to the ovaries? what were they doing?
--- End quote ---
Well, when a mummy and a daddy love each other very much, the daddy puts... ;)
Via the Vagina -> Uterus -> Fallopian tubes -> vicinity of the Ovaries. Ectopic pregnancy, for instance, is when the egg gets fertilized [Edit: and implants] in a Fallopian tube, there is a 'navigable' route right the way to the Ovaries. The journey could take decades - remember how much baby powder used to get thrown around before disposable nappies (still does?).
That's probably a first for eevblog!
P.S. Damn, jpanhalt beat me to it!
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