December 27, 2024, 05:27:58 AM
Forum Rules: Read This Before Posting


« previous next »
Pages: [1]   Go Down

Topic: Please help me with the solubility of phthalic anhydride in chloroform?  (Read 10951 times)

0 Members and 1 Guest are viewing this topic.

Offline caphyboy

  • Regular Member
  • ***
  • Posts: 12
  • Mole Snacks: +0/-0
Please help me with the solubility of phthalic anhydride in chloroform?
« on: September 25, 2006, 10:05:12 AM »
Dear friends:

       Recently,I carry out an experiment in which I want to purify  phthalic anhydride. However ,I only know it can be purified  effiiciently by recrystallizing ,and the best solvent is chloroform.But I donnot the   solubility .
        Would you help me ,please?

       Many thanks!!!
Logged

Offline Albert

  • Lonely Wanderer
  • Retired Staff
  • Sr. Member
  • *
  • Posts: 1050
  • Mole Snacks: +112/-22
  • Gender: Male
  • Half Decent Pharmaceutical Chemist
Re: Please help me with the solubility of phthalic anhydride in chloroform?
« Reply #1 on: September 25, 2006, 10:31:09 AM »
« Last Edit: September 25, 2006, 10:41:59 AM by Albert »
Logged

Offline movies

  • Organic Minion
  • Retired Staff
  • Sr. Member
  • *
  • Posts: 1973
  • Mole Snacks: +222/-21
  • Gender: Male
  • Better living through chemistry!
Re: Please help me with the solubility of phthalic anhydride in chloroform?
« Reply #2 on: September 25, 2006, 11:50:42 AM »
My purification book says you can also distill it under reduced pressure.

Crystallization can also be done from CCl4 or benzene.

Sublimation may also be an option.
Logged

Offline HP

  • Chemist
  • Full Member
  • *
  • Posts: 350
  • Mole Snacks: +33/-5
  • Gender: Male
Re: Please help me with the solubility of phthalic anhydride in chloroform?
« Reply #3 on: September 27, 2006, 01:23:25 PM »
Yes, sublimation the best method for phtalyc anhydride.
Logged
xpp

Offline AWK

  • Retired Staff
  • Sr. Member
  • *
  • Posts: 7976
  • Mole Snacks: +555/-93
  • Gender: Male
Re: Please help me with the solubility of phthalic anhydride in chloroform?
« Reply #4 on: September 28, 2006, 03:15:29 AM »
Could you check procedure in Vogel textbook?
Logged
AWK

Offline AWK

  • Retired Staff
  • Sr. Member
  • *
  • Posts: 7976
  • Mole Snacks: +555/-93
  • Gender: Male
Re: Please help me with the solubility of phthalic anhydride in chloroform?
« Reply #5 on: October 02, 2006, 08:42:05 AM »
Vogel says only that phtalic anhydride is good soluble in chloroform, where us its common contaminant - phalic acid - is insoluble.
Logged
AWK

Offline firassh2000

  • Regular Member
  • ***
  • Posts: 11
  • Mole Snacks: +0/-0
Re: Please help me with the solubility of phthalic anhydride in chloroform?
« Reply #6 on: October 13, 2006, 08:36:02 AM »
u should used hot benzene and stirr it , fitered when it was hot
Logged
Pages: [1]   Go Up
« previous next »
Sponsored Links