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Author: Subject: Obtaining anthranilic acid from methyl red

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[*] posted on 5-12-2011 at 03:06
Obtaining anthranilic acid from methyl red

I have a great amount of methyl red which I find useless for indicator purposes only, so recently I cleaved the Diazo bond with zinc in 50% sulphuric acid, zinc granules are used as I don't have powder. The reaction took 2 days to go to completion. During the time, the very deep red solution gradually fades to colorless, and now a clear solution is obtained

Now the problem came: How can I separate the two products and isolate them?? I suppose the only products are anthranilic acid and N,N-Dimethyl-p-aminoaniline right? But as I neutralize the acid I don't get any precipitate (which the aniline should be insoluble) What's wrong with my strategy /reaction??
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[*] posted on 5-12-2011 at 08:00

How about asking it in organic chemistry section?

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