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Don't worry, if you have enough different kinds of dangerous chemicals they'll be too busy reacting with each other to leave the facility
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Jul 6, 2018 04:42
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Tunicate posted:Don't worry, if you have enough different kinds of dangerous chemicals they'll be too busy reacting with each other to leave the facility Ah yes, the "Royal Rumble" approach to chemical safety.
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Jul 6, 2018 04:43
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mycomancy posted:Ah yes, the "Royal Rumble" approach to chemical safety. 3SS confinement is well-established in the industry 
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Jul 6, 2018 04:51
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Jul 6, 2018 05:11
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This is good, and you should feel good for doing it.
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Jul 6, 2018 05:52
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Are the CSB videos still being produced or was that another loss to the world that we have to blame the Republicans for?
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Jul 6, 2018 06:38
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Munin posted:Are the CSB videos still being produced or was that another loss to the world that we have to blame the Republicans for? They're still working for now. Here's their most recent: https://www.youtube.com/watch?v=jtWyBMwRt-A
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Jul 6, 2018 06:42
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Watermelon Daiquiri posted:Hey, you're forgetting that the other side of phosphorus use in semiconductors is elemental arsenic I don't think the fabs use P or As in elemental form. Phosphine and Arsine have many advantages, like being gaseous and pyrophoric.  e: This led me to James Marsh's original article about his test for arsenic, which had this to say about Arsine: James Marsh posted:...considerable caution should be used in smelling it... Zopotantor has a new favorite as of 06:56 on Jul 6, 2018 |
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Jul 6, 2018 06:44
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Toast Museum posted:They're still working for now. Here's their most recent: Holy gently caress this channel is amazing  . It's like Forensic Files but for natural disasters.
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Jul 6, 2018 06:50
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Zopotantor posted:I don't think the fabs use P or As in elemental form. Phosphine and Arsine have many advantages, like being gaseous and pyrophoric. True, but by the time it hits the wafer it is pretty much elemental
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Jul 6, 2018 07:22
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Semiconductor fabs use a bunch of highly dangerous chemicals for good reason, at least. The wafers of semiconductors you make have to be absurdly pure, like 99.999999%. This means that your reactants themselves have to be very pure, and the reaction has to give no side products that might contaminate the wafer. Highly reactive gases/liquids are at least easier to purify, simply because they will react with trace impurities - distill them afterwards and you have your pure precursors. Then once you heat them to 500C and feed them into the CVD chamber (chemical vapour deposition), they are reactive enough to not hang around and ruin things but immediately form a film. Heating pyrophoric gases does have it's hazards though, so there's research going into trying to make safer single source precursors.
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Jul 6, 2018 09:04
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Johnny Aztec posted:It'll solve A problem. How long would it take a sufficiently large amount of HF to dissolve your hands? I know it's a comparatively weak acid, but I have no feeling for what "comparatively weak" is. It's a moot point really, by the time it's dissolved your hands it'll have leached the calcium from your blood and stopped your heart. Which is at least an interesting way to die.
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Jul 6, 2018 12:45
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Strom Cuzewon posted:How long would it take a sufficiently large amount of HF to dissolve your hands? Probably longer than it takes HF to wreck your colon if you shoot it up your rear end while high on cocaine.
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Jul 6, 2018 14:11
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Vincent Van Goatse posted:Probably longer than it takes HF to wreck your colon if you shoot it up your rear end while high on cocaine. Was he just on cocaine? That seems like an idea that is a little bit beyond cocaine’s wild influence.
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Jul 6, 2018 16:06
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Isn't one of FOOF's uses cleaning semiconductor dies? On the suggestion of people in the OSHA/Danger Chem/Cold War trifecta, I've been reading Atomic Accidents by James Mahaffey. Can confirm it is  and :stareheh:, and anybody who enjoys those threads should read it. I could copy and paste whole slabs of it, but right now I'm covering my eyes as they describe how the first people to experiment with radiation and radioactivity were - insanely reckless, and I wanna say they should have known better.Nikola Telsa, for example, upon inventing a machine that emitted directed X-rays, decided a good expernment would be to crank the machine to max power, and then stick his head in the beam. After a short time he felt "a sensation of warmth on the top of his head, shooting pains, and a shock effect in his eyes" There's also the sad case of Eban Byers, a rich socialite and sportsman who loved the real-poo poo radium water he drank "1500 bottles" of Radium water. His obituary in the Wall Street Journal remarked "The Radium Water Worked Fine Until His Jaw Fell Off".
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Jul 6, 2018 17:02
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Nebakenezzer posted:Isn't one of FOOF's uses cleaning semiconductor dies? FOOF isn't. ClF3 is. Basically, ClF3 is a strong enough reactant that it can break up oxides. FOOF will add more oxygen, and make more oxides for you to clean up.
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Jul 6, 2018 17:13
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Icon Of Sin posted:Was he just on cocaine? That seems like an idea that is a little bit beyond cocaine’s wild influence. Only tested positive for cocaine. Stimulant psychosis is a hell of a drug though.
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Jul 6, 2018 17:18
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Vincent Van Goatse posted:Probably longer than it takes HF to wreck your colon if you shoot it up your rear end while high on cocaine. This feels like a very specific burn, and I'm very glad it's not. What's the story?
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Jul 6, 2018 17:24
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Strom Cuzewon posted:This feels like a very specific burn, and I'm very glad it's not. Fulminant acute colitis following a self-administered hydrofluoric acid enema. quote:Abstract
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Jul 6, 2018 17:30
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Man on cocaine pumped HF acid up his rear end. There was a whitepaper.
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Jul 6, 2018 17:31
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Haha there's a medical article, I hope it's not a whitepaper.
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Jul 6, 2018 18:04
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I didn't see that post when typing mine, had it mixed around.
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Jul 6, 2018 18:15
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conclusion: quote:This case demonstrates that a hydrofluoric acid enema can cause fulminant acute colitis and chronic colonic strictures. *nodding thoughtfully, taking notes*
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Jul 6, 2018 18:23
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Sagebrush posted:conclusion: https://www.youtube.com/watch?v=Bh7Nz4bIwss
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Jul 6, 2018 18:36
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I know LN2 barely registers in the FOOF thread, but we've had a bit of a problem with an LN2 tanker here... http://www.wfsb.com/story/38584968/nitrogen-tanker-that-caught-fire-in-clinton-overturns-on-route-32-in-franklin?autostart=true First, it managed to catch fire on I-95 (how exactly that happened is left as an exercise to the reader) and started venting so violently that they had to close the freeway. Once the fire was out, they started towing it, and now it's tipped over and closed another road. I don't imagine the responding fire trucks were too thrilled.
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Jul 6, 2018 18:56
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Well, on the dangerous chemistry thread recommendation, I'm at that extreme grilled cheese place, got the pork belly bahn mi, I'll let you know when my jaw falls off. In more FOOF news, passed a silane truck in the way here, pushed the accelerator a little harder when I saw what it was
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Jul 6, 2018 21:16
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Cichlidae posted:I know LN2 barely registers in the FOOF thread, but we've had a bit of a problem with an LN2 tanker here... This is an episode of the Simpsons.
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Jul 6, 2018 21:26
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Cichlidae posted:First, it managed to catch fire on I-95 (how exactly that happened is left as an exercise to the reader) and started venting so violently that they had to close the freeway. Isn't that, like, the ultimate case of a self-solving problem? Exacuate the area and waot until the tank pops, thus removing two side of the fire triangle.  (Probably not for various reasons, but a boy can dream.)
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Jul 6, 2018 21:29
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Bad Angus! Bad!
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Update:  that was really good
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Jul 6, 2018 21:29
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I ran the numbers on using silane in a gas mixture for radiation detectors that mimics the response to radiation that would be experienced by semiconductors. It was more of a thought experiment because obviously semiconductor-based radiation detectors do a better job of measuring that. The closest I got was a mixture of silane and carbon dioxide. It's probably best that I didn't ask the gas company to mix me up a cylinder of that if it's been evaluated as rocket fuel if I was serious about actually using that gas mix I would have done a safety analysis on it first though, because silane is not a typical gas we use. a lot of radiation detector gas mixtures are flammable, but we don't exactly mix them in with oxygen gas though
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Jul 6, 2018 21:48
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I looks really good.
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Jul 6, 2018 21:48
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MazeOfTzeentch posted:Update: Huzzah! Maybe I'll drive over for dinner tomorrow. That does look drat good.
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Jul 6, 2018 23:02
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MazeOfTzeentch posted:Update: Posted banme.
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Jul 6, 2018 23:04
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Midjack posted:Posted banme. 10/10
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Jul 6, 2018 23:13
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Chillbro Baggins posted:Isn't that, like, the ultimate case of a self-solving problem? Exacuate the area and waot until the tank pops, thus removing two side of the fire triangle. 'Exacuate' ? I like it. Make sure everyone is dead so no further casualties possible. It satisfies the accountant in me.
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Jul 7, 2018 00:12
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It says something about the knowledge I've gained from this thread that, despite my not having taken a chemistry class since high school, the phrase "tetramethyl ammonium hydroxide" is loving terrifying. Even without looking it up. I looked it up anyway and, joy, it's an acetylcholine receptor agonist. That's a fun way to die.
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Jul 7, 2018 01:38
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Cichlidae posted:I know LN2 barely registers in the FOOF thread, but we've had a bit of a problem with an LN2 tanker here...
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Jul 7, 2018 01:55
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Midjack posted:Posted banme. 
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Jul 7, 2018 04:58
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Holy God-Emperor, all my smilies up until this very moment have been a lie...
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Jul 7, 2018 14:20
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Schadenboner posted:Holy God-Emperor  I'm detecting a theme here...
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Jul 7, 2018 14:26
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