thors.lab
Hazard to Others
Posts: 103
Registered: 19-7-2019
Member Is Offline
|
|
Substitute solvent for p-aminophenol (instead of EtOEt?)
Hi,
I'm looking at performing this reaction involving the preparation of p-aminophenol from nitrobenzene.
The procedure calls for the use of diethyl ether to extract the product from an aqueous solution, followed by distillation. Is there a cheap
substitute for this? I was looking at maybe ethyl acetate, but that stuff is pretty pricey. Pubchem says p-aminophenol is slightly soluble in toluene,
but considering it's "practically insoluble in benzene" I'm not sure it would be enough for a good extraction.
As a side note, I was looking to avoid EtOEt because unfortunately, I don't have the equipment to extract EtOEt efficiently from something like car
starter fluid. I don't have a very efficient condenser (standard 200mm or 300mm liebig) and my vigreux won't be here on time before I have to go back
to my uni dorm. That being said, does anybody think a simple distillation setup with a 200/300mm liebig (can't remember the exact length right now)
would be sufficient to recover at least a reasonable amount of ether?
Thanks,
Thor
[Edited on 22-12-2019 by thors.lab]
|
|
|
stephill92
Harmless
Posts: 23
Registered: 19-3-2019
Member Is Offline
|
|
I've found that Walmart (at least for me) sells the highest percent of ether to heptane, and its mostly just those two. I'm sure if you just use a
simple distillation setup you'll get a good enough separation but you'll probably want to get more than one can.
|
|
|
Heptylene
Hazard to Others
Posts: 319
Registered: 22-10-2016
Member Is Offline
Mood: No Mood
|
|
Even a short liebig should work provided you use ice cold water and proceed slowly. A long liebig would only allow you to distill the ether faster, it
would NOT condense more ether.
You can find ethyl acetate in nail polish remover (distill to purify it if you want).
|
|
|
unionised
International Hazard
Posts: 5102
Registered: 1-11-2003
Location: UK
Member Is Offline
Mood: No Mood
|
|
I have a feeling that the para amino phenol would react with ethyl acetate.The reaction may be too slow to matter, but it's easiest to use ether.
Just a thought; if the material extracts into ether, how well does it extract into the ether/ heptane mixture?
You might be able to do without the distillation
|
|
|
thors.lab
Hazard to Others
Posts: 103
Registered: 19-7-2019
Member Is Offline
|
|
Quote: Originally posted by unionised  | I have a feeling that the para amino phenol would react with ethyl acetate.The reaction may be too slow to matter, but it's easiest to use ether.
Just a thought; if the material extracts into ether, how well does it extract into the ether/ heptane mixture?
You might be able to do without the distillation
|
I was wondering this myself. Most likely I don’t think the heptane would affect it too much but I was afraid a significant portion of the EtOEt
would covaporize with the propellants and other low boiling compounds when I tried to remove it from the bottle.
|
|
|
S.C. Wack
bibliomaster
Posts: 2419
Registered: 7-5-2004
Location: Cornworld, Central USA
Member Is Offline
Mood: Enhanced
|
|
There is some high boiler in there. I think the heptane would affect solubility a lot because there's a lot of it. It's easy to separate even so given
the bp difference.
|
|
|
![[*]](images/xpblue/default_icon.gif){kind=icon}
