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macckone
Dispenser of practical lab wisdom
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https://www.youtube.com/watch?v=Vlh0YDRmZ0I
Bakelite?
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HeYBrO
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Quote: Originally posted by aga  | Waiting on some DCM to arrive to try to make pthalic anhydride from some gloves.
Will make the required phenol after i've got the other reagents for phenolpthalein. |
You don't need DCM, just use isoprapanol, or methanol as blogfast used i think.
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aga
Forum Drunkard
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DOH !
(marches off to shed to dunk gloves in methanol ...)
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j_sum1
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DCM is a simple distillation from paint stripper. You can even do it straight from the can.
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blogfast25
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With a BP of barely 40 C you need to use iced water for any refluxers/condensers.
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The Volatile Chemist
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Sheesh, that really is low. I use ice water usually, but I don't salt it (I don't know how much of a difference it would make) because my pump claims
that it only works in fresh water (ie, not salt water like in marine aquariums).
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Little_Ghost_again
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| Quote: Originally posted by The Volatile Chemist | | Sheesh, that really is low. I use ice water usually, but I don't salt it (I don't know how much of a difference it would make) because my pump claims
that it only works in fresh water (ie, not salt water like in marine aquariums). |
what about adding
antifreeze or maybe some IPA to lower the temperature.
Dont ask me, I only know enough to be dangerous
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kt5000
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Our college lab uses a chiller filled with antifreeze that's looped out to the condensor. It seems to work quite well. IPA would be a less toxic
solution, though.
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aga
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New Soxhlet arrived today (donated the last one to a local Uni)
The DCM does not pass through any volume of these cut up vinyl golves, so the Soxhlet did not work at all.
Probably better to boil & reflux.
Trying it with merely Cold water was Interesting - the DCM at the top was refluxing from the heat of the incoming DCM stream
Reached the 3rd bulb of the Allhin condenser.
With Ice added, it did the same, just in the first, and half of the second bulb..
Edit:
Abandoned the attempt for now.
Cleanup was a bitch - the DCM makes these gloves into a mush that sticks to the glass like crazy.
[Edited on 15-10-2015 by aga]
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kt5000
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I'm finding that polymer goos are a pain to clean up as well. I've dusted off my plans to extract something useful from that paint stripper. It left
a mess in the test tubes. I can't imagine trying to scrub it out of a boiling flask. Hot methanol managed to dissolve a lot of it.
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arkoma
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OMG I have missed you nutters
"We believe the knowledge and cultural heritage of mankind should be accessible to all people around the world, regardless of their wealth, social
status, nationality, citizenship, etc" z-lib
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Oscilllator
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He's Back! What took you so long?
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Syntropymancer
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| Quote: Originally posted by UC235 | | Uh, you do know that Nile Red's video is from my writeup in prepub, right? That last bit of liquid might not have been phenol at all, but phenyl
salicylate or xanthone. Did the temperature rise a lot when it passed over? |
And most, not all, of his videos are redone versons of both yours and myst, nothing against him he makes good videos, but I think he should be more
apt to cite you guys
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