April 25, 2024, 04:18:41 PM
Forum Rules: Read This Before Posting


« previous next »
Pages: [1]   Go Down

Topic: Separation of ethanol and phenol  (Read 5037 times)

0 Members and 1 Guest are viewing this topic.

Offline deutdeut

  • Full Member
  • ****
  • Posts: 112
  • Mole Snacks: +2/-0
Separation of ethanol and phenol
« on: February 14, 2007, 10:53:54 PM »
If I have a solution containing ethanol and phenol , how can I separate them?
Logged

Offline UWSteve

  • Regular Member
  • ***
  • Posts: 20
  • Mole Snacks: +1/-0
  • Gender: Male
Re: Separation of ethanol and phenol
« Reply #1 on: February 15, 2007, 01:02:23 AM »
Well, there is a very large difference in their boiling points. Maybe that will start you in the right direction.
Logged

Offline AWK

  • Retired Staff
  • Sr. Member
  • *
  • Posts: 7979
  • Mole Snacks: +555/-93
  • Gender: Male
Re: Separation of ethanol and phenol
« Reply #2 on: February 15, 2007, 02:17:21 AM »
Compare acidity of phenols and alcohols
Logged
AWK

Offline lavoisier

  • Chemist
  • Full Member
  • *
  • Posts: 155
  • Mole Snacks: +17/-3
  • Gender: Male
  • El sueño de la razón produce monstruos
Re: Separation of ethanol and phenol
« Reply #3 on: February 15, 2007, 01:44:02 PM »
Quote from: UWSteve on February 15, 2007, 01:02:23 AM
Well, there is a very large difference in their boiling points. Maybe that will start you in the right direction.

Phenols are tricky in distillation, they are very volatile even below their bp. Phenol itself can be steam-distilled with water. So I would rather follow AWK's suggestion.
Logged

Offline UWSteve

  • Regular Member
  • ***
  • Posts: 20
  • Mole Snacks: +1/-0
  • Gender: Male
Re: Separation of ethanol and phenol
« Reply #4 on: February 15, 2007, 05:14:52 PM »
Quote from: lavoisier on February 15, 2007, 01:44:02 PM
Quote from: UWSteve on February 15, 2007, 01:02:23 AM
Well, there is a very large difference in their boiling points. Maybe that will start you in the right direction.

Phenols are tricky in distillation, they are very volatile even below their bp. Phenol itself can be steam-distilled with water. So I would rather follow AWK's suggestion.

Interesting. Thanks for the info.
Logged

Offline Yggdrasil

  • Retired Staff
  • Sr. Member
  • *
  • Posts: 3215
  • Mole Snacks: +485/-21
  • Gender: Male
  • Physical Biochemist
Re: Separation of ethanol and phenol
« Reply #5 on: February 18, 2007, 05:58:41 PM »
How would extracting with aqueous sodium hydroxide work?  Ethanol is soluble in water as well.
Logged

Offline Custos

  • Full Member
  • ****
  • Posts: 217
  • Mole Snacks: +32/-0
  • Gender: Male
Re: Separation of ethanol and phenol
« Reply #6 on: February 19, 2007, 01:05:05 AM »
Phenol is not very soluble in aliphatic hydrocarbons. You could add some hexane and cool the solution and the phenol may crystallise out (m.p. = 40-43 deg C). you could then collect it by filtration. Of course you then need to separate the hexane and ethanol.
Logged
Pages: [1]   Go Up
« previous next »
Sponsored Links