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Chemistry Forums for Students => Undergraduate General Chemistry Forum => Topic started by: jdover5199 on March 17, 2019, 02:51:18 PM

Title: Azo Dye Naming Help
Post by: jdover5199 on March 17, 2019, 02:51:18 PM
Working on a lab report and can't seem to find out the chemical name of this azo dye we used in synthesis. Tried to search on google based solely on the chemical formula and could not seem to find the right structure, and it is a little too complicated to name by myself. Any ideas?
Title: Re: Azo Dye Naming Help
Post by: sjb on March 17, 2019, 03:42:18 PM
C1=CC=C(C2=C1C=CC=C2[S](=O)(=O)[O-])NC3=CC=CC=C3.[N+]([H])([H])([H])[H]

The parent (naphthalene) is something like 8-aminonaphthalene-1-sulfonic acid. Can you piece together the rest?
Title: Re: Azo Dye Naming Help
Post by: AWK on March 17, 2019, 04:03:56 PM
ANSA is not an azo dye. It is used as a fluorescent indicator.
Title: Re: Azo Dye Naming Help
Post by: wildfyr on March 17, 2019, 04:41:30 PM
Azo dyes will by definition have N=N in them.