Dangerous Japanese 'Detergent Suicide' Technique.....

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richie
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14 Mar 2009, 11:14 am

Dangerous Japanese 'Detergent Suicide' Technique Creeps Into U.S

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A suicide technique that mixes household chemicals to produce a deadly hydrogen sulfide gas became a grisly fad in Japan last year. Now it's slowly seeping into the United States over the internet, according to emergency workers, who are alarmed at the potential for innocent causalities.....


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pakled
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14 Mar 2009, 11:20 am

,,any potentially successful suicide method is by nature dangerous. There's got to be a better way to go.



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14 Mar 2009, 11:38 am

That is a nasty one, I can not recall quite how H2S kills you but I am aware that the nose soon loses the ability to smell H2S. So the smell is not as good a warning as you might think.


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Anemone
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14 Mar 2009, 11:43 am

Um, yeah, that would be dangerous for emergency services workers.

"Detergent suicide" reminds me of a joke that was going around when I was a kid. A girl drinks an entire bottle of Lestoil (a cleaning fluid) and dies. When she gets to the pearly gates, St Peter asks her how she got there and she sings the jingle "It's so easy when you use Lestoil".



LiendaBalla
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14 Mar 2009, 12:24 pm

Let us take the term "grisley death" to mind here. Ok I just read some brief paragraph about how it "paralyzes the scence of smell", causes uncontiousness because of brain damage (do I really need to know how?), and also causes fluid to be in the lungs. It says this gas can come from disturbed liquid poop! eeewww...

*sarcasum* Let's go drink toxic waist and #$% while we are at it. :?



anna-banana
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14 Mar 2009, 1:20 pm

there are so many cooler ways to commit suicide...

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and the list goes on...

:lol:


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Fogman
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14 Mar 2009, 4:38 pm

Woodpecker wrote:
That is a nasty one, I can not recall quite how H2S kills you but I am aware that the nose soon loses the ability to smell H2S. So the smell is not as good a warning as you might think.


I was always under the impression that H2S kills due to the fact that it converted to H2SO4 in the lungs, however this bit from Wikipedia corrects that misconception that I had.

Wikipedia wrote:
Hydrogen sulfide is considered a broad-spectrum poison, meaning that it can poison several different systems in the body, although the nervous system is most affected. The toxicity of H2S is comparable with that of hydrogen cyanide. It forms a complex bond with iron in the mitochondrial cytochrome enzymes, thereby blocking oxygen from binding and stopping cellular respiration. Since hydrogen sulfide occurs naturally in the environment and the gut, enzymes exist in the body capable of detoxifying it by oxidation to (harmless) sulfate.[4] Hence, low levels of sulfide may be tolerated indefinitely.

At some threshold level, the oxidative enzymes will be overwhelmed. This threshold level is believed to average around 300-350 ppm. Many personal safety gas detectors, such as those used by utility, sewage and petrochemical workers, are set to alarm at as low as 5 to 10 ppm and to go into high alarm at 15 ppm.

An interesting diagnostic clue of extreme poisoning by H2S is the discoloration of copper coins in the pockets of the victim. Treatment involves immediate inhalation of amyl nitrite, injections of sodium nitrite, inhalation of pure oxygen, administration of bronchodilators to overcome eventual bronchospasm, and in some cases hyperbaric oxygen therapy (HBO). HBO therapy has anecdotal support and remains controversial.[5][6][7]

Exposure to lower concentrations can result in eye irritation, a sore throat and cough, nausea, shortness of breath, and fluid in the lungs. These symptoms usually go away in a few weeks. Long-term, low-level exposure may result in fatigue, loss of appetite, headaches, irritability, poor memory, and dizziness. Chronic exposures to low level H2S (around 2 ppm) has been implicated in increased miscarriage and reproductive health issues amongst Russian and Finnish wood pulp workers, but the reports hadn't (as of circa 1995) been replicated. Higher concentrations of 700-800 ppm tend to be fatal.

* 0.0047 ppm is the recognition threshold, the concentration at which 50% of humans can detect the characteristic odor of hydrogen sulfide [1], normally described as resembling "a rotten egg".
* 10-20 ppm is the borderline concentration for eye irritation.
* 50-100 ppm leads to eye damage.
* At 150-250 ppm the olfactory nerve is paralyzed after a few inhalations, and the sense of smell disappears, often together with awareness of danger,
* 320-530 ppm leads to pulmonary edema with the possibility of death.
* 530-1000 ppm causes strong stimulation of the central nervous system and rapid breathing, leading to loss of breathing;
o 800 ppm is the lethal concentration for 50% of humans for 5 minutes exposure(LC50).
* Concentrations over 1000 ppm cause immediate collapse with loss of breathing, even after inhalation of a single breath.

Hydrogen sulfide was used by the British as a chemical agent during World War One. It was not considered to be an ideal war gas, but while other gasses were in short supply it was used on two occasions in 1916.[8]

A series of suicide cases in Japan in which the victims killed themselves by producing toxic hydrogen sulfide fumes by mixing common household cleaning products have highlighted the danger posed by commonly used substances and prompted censorship of internet sites who posted advice for aspiring suicides.[9]


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pezar
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15 Mar 2009, 5:28 pm

The Japanese are constantly on the lookout for new and improved ways to kill themselves. I'm surprised their society has lasted 2000 years, with all the Japanese offing themselves they should have depopulated the archipelago a LONG time ago. They may yet do so, especially with Japanese birth rates far below replacement rate, and immigration not an option.

Japanese society is extremely weird-other Asian cultures allow for suicide in cases of EXTREME failure, such as ruining a huge corporation or becoming unable to feed your family, but the Japanese do it over just trivial stuff. Any little oops is a good reason to do yourself in. Maybe they got inbred from 1700 years in isolation, and they have no perspective. Ever since the economic collapse of 1990 in Japan, suicide has been accelerating at an alarming rate.

This is especially dangerous, since as the article noted the gas can be deadly to unprotected emergency personnel. So the guy is dead inside an old Chevy, and the paramedics break the windows, and immediately collapse. It's like that X Files episode where the blood of the half-alien mutants was toxic, and if they got cut and were bleeding anybody nearby was rendered unconscious, although Chris Carter didn't go so far as to kill them.

In the US the general attitude is that if somebody is really bent on killing themselves they WON'T clue others in, so there's really nothing anybody can do. Usually here anybody who threatens to kill himself ends up in a loony ward for 3 days, just to insure that they DON'T do it, sort of a cooling off period. There isn't any real effort made to treat them, since there's no followup because we don't have govt health care. They're just locked up until the immediate threat passes, then they are freed. They could go right to the freeway and jump off an overpass, but the general attitude is that it's not the bin's problem.

However, anybody who kills OTHER PEOPLE in the course of killing themselves, especially if it's somebody innocent like a paramedic or a next door neighbor, is reviled. Every so often somebody will fill their house with natural gas and light a match, which causes plenty of destruction but usually doesn't kill anybody unless it's from flying debris. THOSE people are hated, because the right to own and use property is sacred in most of the US. When you blow up a row of houses to kill yourself, you're more hated than a guy who gets in a gunfight with cops for the same purpose.



Asmodeus
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16 Mar 2009, 8:31 pm

M-m-m-MONSTER KILL! :twisted:



Arcanyn
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17 Mar 2009, 3:49 am

I'm somewhat puzzled as to the chemical basis of this. They only way I can think of that one might produce H2S from a detergent if one were to use an anionic detergent, which are generally the salts of long chain sulphonic acids (R-SO3[-] M[+]). That gives you your sulphur, but it's going to be a pretty non-trivial matter to convert that into H2S - you've got to cleave the carbon-sulphur bond somehow, and reduce the sulphur down to the -2 state. That can be done, I'm sure, but would require a rather involved and in-depth synthesis requiring many steps - it would be much more practical to just forget about using a sulphonic acid as your starting material and instead use something a little simpler, such as the alkaline disproportionation and subsequent acidification of elemental sulphur (which I have done myself on many occasions, except I obviously take considerable pains to avoid getting acid anywhere near the resulting solution, as I prefer to experiment with ionic sulphides rather than deadly poison gas).

It seems likely they're using the term 'detergent' to mean something completely different (presumably for the purposes of avoiding giving people information on killing themselves); as it is quite improbable that there exists a simple way to convert sulphonic acids to H2S that anybody with no knowledge of chemistry could easily do.



Diamonddavej
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17 Mar 2009, 9:59 pm

Here is one reaction:

ZnS + 2HCl -> H2S + ZnCl2

Its a test used to identify sulfide minerals, if a few drop of dilute HCl causes a stink, its a sulfide ... in this case Sphalerite or Wurtzite. Not sure where you can get ZnS though, apart from a rock shop.



Arcanyn
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18 Mar 2009, 9:22 am

Last time I checked ZnS wasn't a component of detergent.