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Chemistry Forums for Students => Organic Chemistry Forum => Topic started by: lildimplz on March 10, 2004, 11:35:21 PM

Title: 4-nitrophenol characterization
Post by: lildimplz on March 10, 2004, 11:35:21 PM

Why would 4-nitrophenol form a white precipitate in a halogen test using silver nitrate and nitric acid if there is no halogen in its structure?



Edit: edited title for better indexing. Mitch

Title: Re:4-nitrophenol
Post by: Mitch on March 11, 2004, 05:40:57 AM

I don't think it should. Could you take a melting point of the precipitate to see if it is an Aryl halide. Or even a boiling point of the nitro compound to make sure it is what you think it is?

Title: Re:4-nitrophenol
Post by: Bystander on March 12, 2004, 01:41:30 AM

You might be knocking it out of solution;  add a little ethanol and see if it dissolves/clarifies.

Title: Re:4-nitrophenol
Post by: hmx9123 on April 13, 2004, 05:56:59 PM

Are you sure it's not silver nitrite?  Silver nitrite is used in nitrating aromatic rings in the Victor Meyer reaction.

Title: Re:4-nitrophenol
Post by: Donaldson Tan on April 20, 2004, 04:20:45 AM

perhaps it's insolubility at play?