Azo violetAzo violet (Magneson I; p-nitrobenzeneazoresorcinol) is an azo compound with the chemical formula C12H9N3O4. It is used commercially as a violet dye and experimentally as a pH indicator, appearing yellow below pH 11, and violet above pH 13. Read from the Chembox of the Wikipedia article Azo violet, revision 1323725630.

Property

Value

Formula

C12H9N3O4, 259.22 g/mol

Density

1.45 g/cm³

Flash point

261.7 °C

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