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Author: Subject: Dimethylmercury cold storage?
novelist
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[*] posted on 11-12-2018 at 23:08
Dimethylmercury cold storage?


Help, my friend brought dimethylmercury here from his school's lab! I had asked for some mercury but he didn't know what this was. I'm returning it after the holidays which means these ampules have to be stored at my place, for the next few weeks.

I've read that mercury solidifies below -32C, but couldn't find the freezing point for dimethlmercury. Also, like mercury could I place it in water or ice to lower chances of vapor or volatile heat? Or would there be a water/ice-crystal reaction that could cause a gaseous discharge that bursts the ice (allow leeching/seepage)?

I plan to discreetly return all but one of the samples, and would like to know if cold storage is the best means of keeping this chemical. Happy holidays and many thanks in advance!!!
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[*] posted on 11-12-2018 at 23:36


This is all kinds of scary.
Dimethyl mercury can kill you in minute exposures. It passes through the skin and is an extremely powerful neurotoxin. 0.1mL on the skin and you are dead.


[color=Red]Do not keep it. Do not handle it unnecessarily. Call someone qualified to come and collect it immediately. You should have an image in your mind of yellow hazmat suits and gas masks.[/color]


The fact that you are not differentiating between mercury metal and organic mercury means that you have no idea what you are handling. I would not want to be in the same room as that stuff.
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[*] posted on 11-12-2018 at 23:36


RUN AWAY. VERY FAST. CALL A HAZMAT TEAM. THIS IS NOT A JOKE.

(assuming you're not trolling, of course)




As below, so above.
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j_sum1
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[*] posted on 11-12-2018 at 23:41


[quote]In 1996, Professor Karen Wetterhahn, an organometallic chemist (1) at Dartmouth College, was running an experiment that required the use of a chemical called dimethylmercury, a colorless, volatile, sweet-smelling liquid(2). She was using all proper safety precautions — protective clothing, gloves, and most important, a negative pressure fume hood(3). During the transfer, Wetterhahn spilled one or two drops of the liquid on the back of one of her latex gloves(4). After five months, she began to display symptoms of severe neurological impairment, and was hospitalized. Three weeks later she slipped into a coma. Five months later she was dead from mercury poisoning. There was nothing that could be done to save her life, including chelation therapy(5).[/quote]
from https://www.acsh.org/news/2016/06/06/two-drops-of-death-dimethylmercury
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woelen
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[*] posted on 12-12-2018 at 00:15


Someone is trolling here. Do you really believe that a school has dimethylmercury in stock? And on top of that, do you believe that it is stored in such a way that it can be taken away by some pupil without any notice?

If this is not trolling, then there is a SERIOUS issue! Contact a hazmat team or whatever organisation is responsible for such a thing in your area. [b]Do not handle it yourself, a small accident will lead to death, after a period of extreme illness.[/b]




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DavidJR
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[*] posted on 12-12-2018 at 03:36


[rquote=561375&tid=111265&author=woelen]Someone is trolling here. Do you really believe that a school has dimethylmercury in stock? And on top of that, do you believe that it is stored in such a way that it can be taken away by some pupil without any notice?

If this is not trolling, then there is a SERIOUS issue! Contact a hazmat team or whatever organisation is responsible for such a thing in your area. [b]Do not handle it yourself, a small accident will lead to death, after a period of extreme illness.[/b][/rquote]

Perhaps by 'school' they mean a university.
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j_sum1
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[*] posted on 12-12-2018 at 03:42


[rquote=561375&tid=111265&author=woelen]Someone is trolling here.[/rquote]
That thought occurred to me too. I doubt the story is true in its entirety: I am not going to expect unembellished truth from someone pilfering stuff.

But if there is any truth whatsoever to the organic mercury compounds... that is serious stuff.
Put it down carefully. Evacuate. Call the Hazmat guys.
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[*] posted on 12-12-2018 at 04:22


Hopefully any organisation in the developed world will have dimethyl mercury in secure storage and any missing quantities investigated.

I can imagine the response of parents and authorities in the US and UK to discover that a child’s school has any quantity of methyl mercury even if its secure in a locked safe.

Yes I would say it almost certainly a trolling post.

In the UK several years ago now they had what I will call the mercury squad visiting each university department to secure and hermeticaly seal any mercury and preferably remove it.




Borosilicate glass:
Good temperature resistance and good thermal shock resistance but finite.
For normal, standard service typically 200-230°C, for short-term (minutes) service max 400°C
Maximum thermal shock resistance is 160°C
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[*] posted on 12-12-2018 at 08:00


[rquote=561460&tid=111265&author=wg48]In the UK several years ago now they had what I will call the mercury squad visiting each university department to secure and hermeticaly seal any mercury and preferably remove it.
[/rquote]But those are UNIVERSITIES!!! So they think they know more than the universities themselves?! I don't think they need to teach a dog to bark...




Useful sites:
Balance Chemical Equation: http://www.webqc.org/balance.php
Molecular mass and elemental composition calculator: https://www.webqc.org/mmcalc.php
Solubility table: https://en.wikipedia.org/wiki/Solubility_table
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[*] posted on 12-12-2018 at 10:16


I'm surprised that wasn't under lock and key with strict accounting procedures in place.

Someone is going to jail.


[Edited on 12-12-2018 by Mr. Rogers]
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[*] posted on 12-12-2018 at 11:57


This has to be bullshit as the melting point is the first hit on Wikipedia. Why would anyone wants to own mercury... have a friend who can get it... but won't be able to find the melting point... Which doesn't matter when it is in ampules.
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[*] posted on 12-12-2018 at 16:02


I have seen shit like this happen irl, same way I have seen friends in the military walk out with stuff that'd make your underwear crawl up you.

So this is very plausible, and if real as others have said GET AWAY FROM IT, do not touch it, do not handle it, call the uni and make up some thing but let professionals handle it from here on out as [b]this stuff is lethal in no uncertain terms[/b]
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[*] posted on 12-12-2018 at 17:12


Thanks for the non-responses to my inquiry.

I know the difference between dimethylmercury and mercury. I was simply asking if I could store it in my freezer for safe(r) keeping. Plus I asked for the freezing point, where it would become less liquid/vaporous - not the "boiling point".

I'm in a rural area and nobody's coming to pick this up anytime soon. Flying out tomorrow, and it's otherwise in my cupboard.
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[*] posted on 12-12-2018 at 17:34


[rquote=561637&tid=111265&author=novelist]Thanks for the non-responses to my inquiry.

I know the difference between dimethylmercury and mercury. I was simply asking if I could store it in my freezer for safe(r) keeping. Plus I asked for the freezing point, where it would become less liquid/vaporous - not the "boiling point".

I'm in a rural area and nobody's coming to pick this up anytime soon. Flying out tomorrow, and it's otherwise in my cupboard.[/rquote]
With respect, you are an idiot.
This is not something to be trifled with.
You clearly do not comprehend just how deadly this stuff is. And, let's face it, you cannot have a legitimate need for it.

Imagine a low probablity scenario where this stuff is somehow released in your absence -- a natural disaster or something. And your failure to apply some basic sense or listen to advice kills a bunch of people.

Get on the phone NOW and work out a better solution to the situation.

Popping it in the freezer is not a solution. A cracked ampoule seal from thermal shock or from something in the freezer shifting and your freezer and its contents are a death trap. No one will know the hazard until far too late -- including you. This is the dumbest thing possible
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[*] posted on 12-12-2018 at 17:50


The melting point of dimethylmercury, per Wikipedia, is -43 C. Lower temperature means lower vapor pressure, but if you're asking sciencemadness how to store dimethylmercury, you're incapable of storing it safely at any temperature.



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[*] posted on 12-12-2018 at 18:37


The year was 2006, my university still kept a bottle of dimethyl mercury. The alternating stories were:

-Disposal is just too damn expensive.
-The disposal company won't take it.
-Someone in the NMR lab said they need it.
-Dimethyl mercury, why should I care?




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[*] posted on 12-12-2018 at 18:53


I would rather you keep that ampoule in an empty cupboard than in your food freezer. Definitely don't freeze it into ice! The ice could crack the glass and you wouldn't know until it melted. Instead, keep it somewhere it won't get broken, until you can return it. Remember, storing it at home is unsafe, it's just a temporary solution. Preferably you would have someone from the university pick it up now, even if you miss the flight. It's really important that this doesn't get broken.

That's assuming it's in a completely sealed ampoule. If it is in a broken ampoule, or a bottle with a removable top, an open bottle, or anything that can be opened to the air, YOU NEED TO GET AWAY FROM IT NOW. Call emergency services and explain what it is, or better yet, call the university, so they can direct a safe cleanup. Don't even touch the bottle, and certainly don't freeze it.

Now for what I think is most worrying:

[rquote=561364&tid=111265&author=novelist]I plan to discreetly return all but one of the samples...[/rquote]

So you plan on keeping some? You don't really have use for it. You'd probably poison yourself accidentally if you tried using it for an experiment, at least if you're anything like me. Just storing an ampoule is pointless, and dangerous as I said before. Besides, if you plan on returning the other ampoules to the university, won't that prompt them to check the inventory and find that one is still missing?

Call the university. Even if you get in trouble with the law, that's better than getting killed.

Really hope this is a troll.

[Edited on 13-12-2018 by Vomaturge]
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[*] posted on 13-12-2018 at 06:20


i have 60 mesh PuO2. wanna trade bro??
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[*] posted on 13-12-2018 at 07:11


This is clearly a kid that googled "most dangerous chemical" and is just trying to troll.
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[*] posted on 13-12-2018 at 09:55


Can we move this to detritus already?

Obvious troll is obvious.
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[*] posted on 13-12-2018 at 10:17


[rquote=562030&tid=111265&author=Harper]i have 60 mesh PuO2. wanna trade bro??
[/rquote]


[sup]239[/sup]PuO[sub]2[/sub] that is I hope?
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[*] posted on 13-12-2018 at 12:43


Before this gets thrown in detritus, maybe we can explore the possibility of reacting the PuO2 with the Hg(CH3)2 to make a novel compound?
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[*] posted on 13-12-2018 at 13:37


Maybe a little sic? But if this is a true post the poster may already be dead albeit (within a year) give or take and clueless.

I do not think that a normal school lab (including grad school) would have this. I suspect it would only be in a research lab doing work with metal poisonings or possibly as a standard (CDC level) to test against such.

I really hope the OP is trolling, if not trolling then lucky, or death may be coming.
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[*] posted on 13-12-2018 at 13:38


[rquote=562191&tid=111265&author=DoctorOfPhilosophy]Before this gets thrown in detritus, maybe we can explore the possibility of reacting the PuO2 with the Hg(CH3)2 to make a novel compound?[/rquote]

Just mix them and put in automatic sprayer in bedroom.. Sweet smelling dreams..




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[*] posted on 13-12-2018 at 13:46


[rquote=562215&tid=111265&author=TheMrbunGee][rquote=562191&tid=111265&author=DoctorOfPhilosophy]Before this gets thrown in detritus, maybe we can explore the possibility of reacting the PuO2 with the Hg(CH3)2 to make a novel compound?[/rquote]

Just mix them and put in automatic sprayer in bedroom.. Sweet smelling dreams..[/rquote]

Plutonium 239 unfortunately only gives of alpha radiation without any neutrons, which isn't really transmutagenic.
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