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Author: Subject: Bad Habits In The Lab
mayko
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[*] posted on 17-3-2016 at 20:31


I thought that was phosgene?



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The Volatile Chemist
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[*] posted on 1-4-2016 at 14:43


That's strange. But is the 'reaction' which causes the bitter taste from some random component of the tobacco or the nicotine itself? Elsewise, of course, e-cigs wouldn't help in detection. Though somehow smoking a giant cigar sounds more cool than an e-cig in the lab anyways, even though e-cigs look postmodern/steampunk.



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JJay
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[*] posted on 1-4-2016 at 15:37


I usually try to keep food away, but I drink coffee in the lab all the time.
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Sulaiman
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[*] posted on 1-4-2016 at 16:01


I frequently drink and smoke in my lab/shed
but most of my chemicals are at least food grade :)
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The Volatile Chemist
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[*] posted on 1-4-2016 at 19:14


Quote: Originally posted by JJay  
I usually try to keep food away, but I drink coffee in the lab all the time.

Yeah, I drink water and milk in the lab, but usually finish before I actually start something or just drink it while I watch something, not while I'm working. I don't like to taste the vapors or powders which have drifted into my drink and dissolved, as I usually am able to taste that sort of thing...




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aga
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[*] posted on 2-4-2016 at 14:01


If cigarettes/beer/coffee were banned from my lab, it'd be Empty.

Well, Full of cool Stuff, just totally unused.
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dhaffnersr
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[*] posted on 3-4-2016 at 04:30


Ha! I thought I was the only one who swung around the empties;)

I'm glad you admitted it first though!
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Intergalactic_Captain
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[*] posted on 3-4-2016 at 13:18


Overstocking due to odd availibilities - Started in my first lab a decade ago with 1lb of NH4I (Malinkrodt!) for $25, learned a lot about how NOT to prepare elemental iodine - Now the remaining ~100g is used in mg amounts as a substitute for catalytic I2 in a handful of reactions. I've got a few more examples, especially when it comes to pyrotechnic chems, but that's one of the gems in the collection.

And then theres just about everything regarding improper handling of glassware - Karma's a bitch - Over the span of a week not long ago I lost probably $300 in beakers and 24/40 gear in the wash sink.

Biggest one though is not respecting heat, and the last lesson is gonna stick with me for a while. I was attempting to prepare toluenesulphonic acid ala Norris, but using an oil bath rather than steam. After six hours or so I was getting impatient, and decided to toss in a stirbar to get things moving - Well, move they did, in the form of a geiser of hot acid directly into my face. Thankfully, I wear glasses, and had a 5lb box of baking soda in reach - scrubbed down, jumped in the shower, and began the long and not-fun healing process.

. . . Got damn lucky but a few scars are still gonna be there for a long while - Lesson learned - Let it cool before introducing nucleation points! In the back of my mind I knew this, but that "done this a thousand times" mentality is occasionally difficult to overcome.




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100PercentChemistry
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[*] posted on 3-4-2016 at 16:56


Not washing my glassware after an experiment. It may not seem like a big deal, but it's a real pain to clean it later.
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Sulaiman
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[*] posted on 3-4-2016 at 20:09


with just about every professional chemist using glassware
you'd think that by now we'd have e-z-cleen glass or similar :(
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Ozone
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[*] posted on 4-4-2016 at 11:28


See note #1:

http://www.orgsyn.org/demo.aspx?prep=CV1P0314

O3




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The Volatile Chemist
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[*] posted on 9-4-2016 at 17:44


Quote: Originally posted by 100PercentChemistry  
Not washing my glassware after an experiment. It may not seem like a big deal, but it's a real pain to clean it later.

Story of my chemical life right there...
Also, I always dry things on a hotplate, just because I'm in a hurry. Usually end up splattering stuff everywhere...




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[*] posted on 9-4-2016 at 21:07


drinking.............



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Nucleophile
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[*] posted on 15-4-2016 at 08:19


Cleaning fume hood with perchloric acid.... Kidding lol. I always wondered why does it say '' do not work with perchloric acid in the fumehood''.
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[*] posted on 15-4-2016 at 10:26


Quote: Originally posted by 100PercentChemistry  
Not washing my glassware after an experiment. It may not seem like a big deal, but it's a real pain to clean it later.

Me too. I've had to resort to piranha a couple of times. Quality of glass is a factor too. I notice Kontes sep funnels and flasks come clean in soapy water even after sitting around for weeks. Chemglass not so much. Bomar gets etched easily. Pyrex is as good as kontes. Wheaton makes good soft glass. Seems like you can beat a wheaton container with a hammer and not break it. And they are in the US! Vineland NJ at last call. As an aside, I recommend Scientific Machine and Supply of Plainfield, NJ for threaded glass couplings. The owners were lens makers and still affiliated with a lens manufacturing plant. They cut the threads on a machine lathe. These hold vacuums well. I used to work for them designing glassware. We didn't make the glassware there but had a shop in Vineland do the donkey work. They also make ptfe replacement parts and sleeves. I'm looking for a good glassblower in PDX if anyone knows or has a favorite. Ahhh - too many topics!!!




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[*] posted on 15-4-2016 at 15:23


Quite cool that you used to work at such a place. I have noticed my few Pyrex pieces come clean a lot easier than the china-glass, but also that they look cleaner to start out with, have more of a sparkle to them.



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