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Dave Angel
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Quote: Originally posted by Zan Divine  | | The scarriest lab toxin to me is bis(chloromethyl)ether (anybody who uses chloroacetyl chloride ought to pay attention). |
Coincidentally, I was just reading up on chloroacetyl chloride today. Does the chloride react with itself to form bis(chloromethyl)ether, or is
something else involved? My chemistry (particularly organic) is a little rusty and I can't figure a mechanism...
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Zan Divine
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Mood: Wishing all the worst that life has to offer to that SOB Wayne Lapierre
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On an industrial scale, CAC is made from 1,1-Dichloroethylene by a light catalyzed oxidation. BCME is a very minor contaminant. A side product, from
over-oxidation of some percentage of the starting material, is a peroxide mess which decomposes to give BCME and other, lesser, toxins.
And yet, widespread awareness of the BCME problem, from all sources, seems lacking
I still can't believe that anybody still thinks about chloromethylation via formaldehyde & HCl. But they do.
There's also a whole crew out there trying to make methylamine hydrochloride and some of their methods are probably generating toxins they don't even
know exist.
Give me fast and furious toxins any day.
[Edited on 8/8/2012 by Zan Divine]
He who makes a beast of himself gets rid of some of the pain of being a man. --HST
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AJKOER
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Please note that H2S can poison you via skin absorption with a perfectly good gas mask. There was a case of reported fatalies among sew workers
wearing their mask but having removed clothing thereby permitting skin exposure, so this is real.
The delayed mortality effect is also pretty scary as having received a fatal dose, you may not know it (walking dead).
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Also, those working in a low dose H2S setting, I believe there is available some research on the effects of such prolonged H2S exposure.
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AJKOER
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Interesting, sources actually disagreed on skin exposure poisoning of Hydrogen sulfide. Here is my reference to a peer reviewed study: www.gasdetection.com/Toxnet_HSDB/h2s.html
which allures to skin toxicosis from high concentrations over a long period. Another source states "Absorption through the skin is minimal." See www.osha.gov/OshDoc/data_Hurricane_Facts/hydrogen_sulfide_fa...
I suspect that skin absorption becomes more significant at high concentrations, and with prolonged H2S exposure, deadly.
[Edited on 16-8-2012 by AJKOER]
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polymerizer87
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I believe Sodium thiosulfate is used to treat cyanide poisoning
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Endimion17
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Nitrite and thiosulphate. Nitrite liberates respiratory enzyme system by creating methemoglobin which cyanide anion "likes" more than the
enzyme. Thiosulphate removes the cyanide and you get hemoglobin again.
Organic nitrites would work fine enough. If you're about to die, you don't care about some harmful effects of the antidotes.
If one's working with cyanides, it's advisable to have these ampoules ready.
[Edited on 22-8-2012 by Endimion17]
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