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Chemistry Forums for Students => Organic Chemistry Forum => Topic started by: caphyboy on September 25, 2006, 10:05:12 AM

Title: Please help me with the solubility of phthalic anhydride in chloroform?
Post by: caphyboy 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!!!

Title: Re: Please help me with the solubility of phthalic anhydride in chloroform?
Post by: Albert on September 25, 2006, 10:31:09 AM

Check this out: http://pubs.acs.org/cgi-bin/abstract.cgi/ancham/1953/25/i09/f-pdf/f_ac60081a034.pdf?sessid=6006l3

Unfortunately, I couldn't find more.

Title: Re: Please help me with the solubility of phthalic anhydride in chloroform?
Post by: movies 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.

Title: Re: Please help me with the solubility of phthalic anhydride in chloroform?
Post by: HP on September 27, 2006, 01:23:25 PM

Yes, sublimation the best method for phtalyc anhydride.

Title: Re: Please help me with the solubility of phthalic anhydride in chloroform?
Post by: AWK on September 28, 2006, 03:15:29 AM

Could you check procedure in Vogel textbook?

Title: Re: Please help me with the solubility of phthalic anhydride in chloroform?
Post by: AWK 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.

Title: Re: Please help me with the solubility of phthalic anhydride in chloroform?
Post by: firassh2000 on October 13, 2006, 08:36:02 AM

u should used hot benzene and stirr it , fitered when it was hot