Author Topic: Lab Accidents  (Read 2279 times)

Sedit

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Re: Lab Accidents
« Reply #80 on: October 13, 2009, 10:21:04 PM »
Not exactly a Lab accident but sure as fuck an accident non the lest... Someone wanted me to help them fix there heater.... Weel it had a faulty gas valve filling the chamber with natural gas before it ignited giving me first second degree burns and blisters all over my arms.. lossing eylashes and a bit of the brow....

I would type more but its one handed and shit fucking hurts bad.... horray for the bag of hydros in my pocket and lidocaine...
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hypnos

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Re: Lab Accidents+touchpowder
« Reply #81 on: October 29, 2009, 03:46:17 AM »
13yo just acquired a jar of iodine crystals from school, ::),go to local pharmacy,buy 50ml conc ammonia ;D--wack a couple of grams of the iodine in filter paper in funnel,,add

ammonia..looking,looking.. :-\

 hmmmmm softens crystals,,ok,,leave to dry,,go over to mates place,,return about 4am and ddecide to check out "results"-- open filter paper.....BANG.fuckin big time!!  :o                             

scare shit out of self,, wake house,, cat stuck to ceiling... :-[

decide product is highly unstable..forgo using/making again..no injuries except for angry 'old man' +freaked out cat
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delic

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Re: Lab Accidents
« Reply #82 on: December 23, 2009, 09:40:10 PM »
Long ago, was tired of incomplete and expensive methylation of hydroquinone using methyl iodide. Dimethyl sulfate worked so much better, giving complete dimethylation. The product distills nicely but one of the distillation products smells funny, kinda sulfurous... OH SHIT!!!! The dimethyl sulfate was incompletely hydrolyzed during the workup!

Still remember, and worry about it, twenty years later.

poisoninthestain

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Re: Lab Accidents
« Reply #83 on: February 09, 2010, 10:24:31 PM »
so hes got the b-nitrostyrene in a vac dessicator, and checks to see if its dry,,totaly not thinking, and releases the vaccuum, touches the yellow substance, hmm, it feels pretty dry, give it another 12 hours, and then do the recrystallizing, so he forgets to wash his hands, and even besides, all of a sudden his face is burning, FUCk, is it burning, and then washes his hands and face, but at this point, if you wash, it seems to get worse....I am in fucking agony, I am crying, my face feels like blisters,,and can hardly see...this shit is bad..what a fucking idiot, to be touching, releasing the vacuum, so all its fumes can punch my fucking unprotected face...wont happen again,,boohoo

I still have traces of B-nitrostyrenes stuck to my buchner pump handle from way back, sure looks pretty but every time I look at it I'm reminded of the seering pain those solids bring your eyes. Only had it happen to me once and it's not easily forgotten.

jon

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Re: Lab Accidents
« Reply #84 on: February 13, 2010, 07:43:40 AM »
2bfrank it's nice to have good analgesics on board for lab accidents is'nt it???
i know this is an unwritten must have, in case of chemical burns lacrymatory agents etc. it's pure pain.

Tsathoggua

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Re: Lab Accidents
« Reply #85 on: March 31, 2010, 07:10:29 AM »
I once chlorinated a batch of acetone as a kid, using HCl and Cl2 at around age 13 or so, and oh boy, it got hot, suddenly, and even more sudden was the subsequent flash boiling gout of mono and polychloroacetones instantly vaporising throughout my garage, and quicker still, I am sure, was the aspiring chemist, cursing the air black in several languages, hightailing it out of there.

Another time, wearing the due eye protection, I was performing an electrolysis of molten NaOH, a bead of sodium metal, around the size of a lentil, or so, went 'pop', and left me wondering why no organic chem textbooks ever warn about NOSE protection.

Thats right, I got metallic sodium right up the nose, coated in very hot NaOH.

That one hurt like hell, and left a crater in my septum for quite a while afterwards.


Ring opening a certain lactone under basic hydrolytic conditions again when I was younger, it got hot and flash boiled right at the moment I lifted my goggles to scratch my nose, giving me a blast of hot, saturated NaOH (aq) in EtOH right in the face, my right eye still has poor vision.

Immediately ran to the sink and irrigated my eye and the rest of my face, then spent the next several hours pippetting up product from the floor, sink fittings, and swabbing splattered lactone and NaOH mix from the walls, floors and ceiling, aside from what was left in the flask, quite a lot, I did however manage to recover several hundred grams of perfectly useable product, which in more than one way left the night with a good ending (apart from the 'owwww shit' factor.


Scratching ones family jewels after working with KMnO4 is also not to be reccomended.......it leaves brown MnO2 stains that cannot be washed out, and it burns like fury for about two days.

I once, in my younger days, dissected a load of batteries I found, really large, unusually so, lithium cells, with a central pin type structure I assumed at the time to be some sort of pressure relief, upon yanking it out with pliars, and peeling back the casing, in the process I got my hands covered in what I assumed to be liquid SO2 at first, or something like it, then soon after kicked myself (metaphorically) repeatedly up the arse, finding out it was almost certainly thionyl chloride.

Stuff rotted my leather gloves to shreds in just a few minutes after contact, I didn't get too much trouble for it, aside from a permanent thickening and scarring of the skin on a large part of one hand and the utter and absolute destruction of a really nice pair of steel-spiked leather gauntlets (the spikes of which incidentally rusted up within a day or two.

Other accidents, misc. mishaps:

Small white P burn on one wrist, hurt quite a bit, maybe about the size of a grain of rice worth of phosphorus found its way onto my hand distilling the white P, formed by heating the red allotrope, didn't think much of it at the time, other than a minor burn hurting like one does, although later that hand became so weak, it became absolutely impossible to hold a pencil, I didn't at the time connect the two, until a short while later, when I remembered the burn.

Produced very pronounced localised muscular weakness, which surprised me, I haven't before heard of P burns having this effect, although I am well aware of its toxicity, I couldn't grip a pencil and write, trying to, my hand shook like a parkinsons patient with the effort, before just giving up.

Small scale Cl2 inhalation, didn't cause anything worse than gagging.

Likewise with SO2, although I actually like the smell of burning sulfur quite a lot
Some would hint that it implies certain things about my....parentage :p
Nomen mihi Legio est, quia multi sumus

I'm hyperbolic, hypergolic, viral, chiral. So motherfucking twisted my laevo is on the right side.

drone1240

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Re: Lab Accidents
« Reply #86 on: April 02, 2010, 07:13:59 PM »
You cant learn about Murphy via a book or web thread. To be short; have had lips chapped by syphoning naphtha. Mouth chapped by drinking NaOH solution in a cup that was identical to my drinking glass :-X. Face burnt slightly and patches of skin on chest plugged like a cigarette burn from adding water to acid. liq HCL to H2SO4 in a Heineken bottle. Hands burnt and badly colored by HI. Trying to get a punctured punching bag balloon inside another one out the house of kids and women with out killing any of us. Trust me I didn't know any better or even what HI was on that escapade. Murphy is like Darwin I have read and he weeds them out quick or they weed themselves out. That's why you cant eat where you shit as Sedit said. A big problem in the right place is easily remedied. A small problem in the wrong place can sputter,smoke and pop your ass all the way to the coroner or have you ending up on the 5 o'clock news. All these instances are really old and embarrassing memories that while I have learned from them I have repressed them as well! I wouldn't of even of shared if there wouldn't of been 5 pages of fuck ups first. Don't start a thread on lab accidents of friends and acquaintances.
acting in accordance with the dictates of reason....

mumbles

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Re: Lab Accidents
« Reply #87 on: May 10, 2010, 04:46:39 AM »
Runaway with ammonium persulfate and toluene. Seeing that temp fly up and have it bump constantly is pretty unnerving, even when you've moved it out into the cold and its still getting hotter by the second. Another one is stirred electrochem cells. Tiny amounts of acid spray will destroy your clothes. Goggles and gloves are always a must, and coat or apron if you're going to be there for more than a few mins.

lugh

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Re: Lab Accidents
« Reply #88 on: May 10, 2010, 01:27:18 PM »
It's critical to carry out reactions on a small scale at first in case of exothermia or other difficulties  ;) Otherwise at the very least one will be cleaning up a mess and of course these incidents have a habit of attracting unwanted attention  ::)  This article was scanned long ago since it's advice on the subject of preventing lab accidents  8)
« Last Edit: May 10, 2010, 01:33:46 PM by lugh »
Chemistry is our Covalent Bond

mumbles

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Re: Lab Accidents
« Reply #89 on: May 12, 2010, 05:31:06 AM »
Yes small scale is always the best place to start. That was done on a small scale in a 250ml rbf with condenser but swim simply overheated the reaction on his high tech kitchen plate and couldn't stop the runaway. As long as you recognize it early on runaways will give you a lot of respect for the chemicals you're working with. Always wear PPE people! Shit is very fucking important.

Locked

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Re: Lab Accidents
« Reply #90 on: May 12, 2010, 11:33:53 PM »
I just had a lab fire. If you are producing flammable vapor and not taking the proper precautions, sooner or later it will find an ignition source. The batchcave and I are fine.

The noise will wake you up. Wooomph!

As the contractors say, "Block don't burn."
Words to cook by.

jon

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Re: Lab Accidents
« Reply #91 on: May 17, 2010, 03:47:24 PM »
thats why they have those vapor limits on the solvent cans get a voc meter and good ventillation if it's moving fast enough i've run flammable shit through a brushed motor never had problems but don't recommend that.

zajcek01

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Re: Lab Accidents
« Reply #92 on: July 10, 2010, 09:04:24 PM »
Condensation of benzaldehyde+nitroethane (triethylamine catalyst).   Forgot to add boiling stones, the whole thing superheated, bursted out on the ceeling and on the wall,
resulting pinkish ceeling+wall and unpleasant smell everywhere. Had to overpaint.

Another was a LiAlH4 reduction went bad, catching fire. The laboratory glassware survived, the only side efect was a smelly house for a cupple of hours.
I'm just a dreamer.......

Tsathoggua

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Re: Lab Accidents
« Reply #93 on: July 10, 2010, 10:06:20 PM »
I was generating quite a lot of H2S once upon a time, preparing ammonium polysulfides back when I was a lil kid, and wanted to get back at somebody who had really pissed me off running their mouth and made some smartarse comment about autistic people, I was using a mixture of elemental sulfur and parrafin wax melted together and heated in a metal can, connected to a hose led into some ammonia solution.

The hose, unfortunately got too hot and decided to melt, spewing a great plume of smoke and H2S, I immediately held my breath though, and moved the blowtorch flame I was using to heat the reactor off it, and onto the end of the hose to burn off the H2S, then not to put too fine a point on it, ran like hell, to a safe distance, only coming back once there was nothing more being given off.

That was quite effective at scaring the piss out of me, and raising a hideous smell all down the road at the same time.
Nomen mihi Legio est, quia multi sumus

I'm hyperbolic, hypergolic, viral, chiral. So motherfucking twisted my laevo is on the right side.

poisoninthestain

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Re: Lab Accidents
« Reply #94 on: August 10, 2010, 05:12:19 PM »
being the cheap bastard i am i found some really nice magnets at a dollar store which were originally used as a toy...not quite sure what metal they were made from...they were exactly the shape of some egg stirbars so i couldn't resist...they were kinda heavy but not as much as i thought...

...went for a test spin in a flat bottom and then in a round bottom...man, did those things stir! beats the hell outta buying stir bars...anyways, once i cranked up the speed a bit the bar bounced off the side of the wall and my round bottom shattered on the bottom. lesson learned: when it comes to disposable bars make sure they aren't hella dense.

no1uno

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Re: Lab Accidents
« Reply #95 on: August 10, 2010, 06:34:47 PM »
Yep, I personally am kind of over things that make you go BOOM. Consequently my lately realised interest in "Safe" chemistry (oxygen free at least in the box + argon/nitrogen in a schlenk line). I have to get the glass to use the design (limited funds) but hey, I ain't donating a mm2 more skin. There really is nothing like seeing it and feeling it, and for the clowns that keep asking me did it hurt, Sedit too now knows, YES, it fucking does. Not pain precisely, more an intolerable heat.
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Oerlikon

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Re: Lab Accidents
« Reply #96 on: August 22, 2010, 11:26:44 PM »
I had one pretty large and life threatening accidents with primary H.E.,but I was totally non-responsible.
Only thing I can say is that big boom is probably the most painless way to die...
Sight is reduced to the intense whit light in the second(like flash bang form video games),there is no,just intense numbness,
and you hear ringing and then yourself breading shortly afterwards,you can't hear anything else.
Pretty much like that beach scene from "Saving Private Ryan" without that last "ziiiijjuuuuuuuuu",
but it lasts for days. ;D
Good side form that experiences is that I discovered all the glory of beauty of morphine and friends
afterward in the hospital!  ;D ;D ;D

One funny but extremely scary reaction happened to me.
I tried to make p-benzoquinone form hydroquinone/I2/H2O2.
It was 6h long old method form rhodium before I discovered this "5 min boiling method"

Anyway I used MeOH and this thing started to smell much like acetaldehyde/actic acid which is kind'a odd.
I lost my magnetic stir bar and decided to make one from piece of nail sealed in glass.
After 6h passed I cracked up temperature and stirring.
Glass broke and there was slight bumping and bubbling, FORTUNATELY I responded fast and took this away from my
working desk and put it into the bath tub.
Then the hell broke loose,IT ERUPTED!!!

It was hissing,bumping and screaming, definitely the most violent reaction I ever seen. (at least one without flame and boom)
shooting steam and even liquid half meter in the air and whole bathroom was filled with dense acetaldehyde fog.
There was no way to enter bathroom without gas-mask.
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where you can choose your own dreams!

timecube

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Re: Lab Accidents
« Reply #97 on: September 28, 2010, 05:40:01 AM »
Ethanol bumps hard.  Out of water baths.  Onto hot burners.  And catches fire.  It burns hot.

There is a very good reason why you never fill containers more than half full when boiling.

t8er

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Re: Lab Accidents
« Reply #98 on: September 28, 2010, 06:30:39 AM »
I has had a couple lab incidents in the past lol,

first was drinking 30ml of fresh made chloroform (not deliberate),

I had just distilled the chloroform from the reaction, and it was sitting in a 50 ml beaker on my work bench,
Then i thought damn I'm getting thrisrty so i went into kitchen and poured me self a glass of water and headed back to lab to do some reading and what not and put my water down next to the chloroform not even thinking,

About 10 mins later i picked up my glass and took a mouth full and bout 20 seconds later I'm like why the fuck is my mouth burning then spat blood into the sink, noticed what i had done and thought ohhhhhh fuck here we go,

 i jumped on line to check lethal dosages that was all good so i lay down and waited for the shit to start, needless to say I was very very intoxicated, scared shit outta me, i gag when i smell chloroform now

2nd one was with cinnamaldehyde oooooo that shit burns like a mother fucker, I had gloves and all on when i was playing with it, but some must have come into contact with hands when i was removing my gloves, went for a piss and OMFG wow its irritating shit, nearly turned my dick into a cinnamon stick rofl, I now rinse my gloves take em off wash my hands then go to loo rofl
Fizz, PoP, BANG!

Tsathoggua

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Re: Lab Accidents
« Reply #99 on: September 29, 2010, 01:45:53 PM »
Oh nasty, I once did something not far off from the last post above.

Scratched my nuts after going for a leak, after handling a lot of sodium permanganate, wiped my arse after taking the co-ocurring crap, and oh my sweet blue, furry, babyfucking catholic priest jesus shit on a bike, owwwwwch.

It burned like fury for DAYS afterwards, felt like my goolies just got dipped in a DMSO saturated solution of phosgene oxime and CS then rubbed with broken glass.

Sure as hell wouldn't wish to drink chloroform, or even inhale it, but I have drunk quite a fair bit of EtOEt and diisopropyl ether in my time, quite tasty when ice cold and floated on a good vodka.
Nomen mihi Legio est, quia multi sumus

I'm hyperbolic, hypergolic, viral, chiral. So motherfucking twisted my laevo is on the right side.