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Dinitrostilbenedisulfonic acid

Alkaline condensation of dinitrostilbenedisulfonic acid with aminoazo compounds produces a number of highly fast substantive dyes with industrial importance, especially in the shades orange, scarlet, and brown [6], Example C. I. Direct Orange 39, 40215 [1325-54-8] (for synthesis, see Section 3.3.4). [Pg.166]

Some stilbene azo dyes are prepared by methods other than diazotization and coupling. Direct Orange 61, for example, is prepared by the condensation in alkaline solution of aminoazobenzene-m-sulfonic acid and dinitrostilbenedisulfonic acid. The exact structure of Direct Orange 61 is not known, but the presence of an azo linkage formed by... [Pg.899]

See other pages where Dinitrostilbenedisulfonic acid is mentioned: [Pg.329]    [Pg.170]    [Pg.258]    [Pg.263]    [Pg.272]    [Pg.454]    [Pg.259]    [Pg.264]    [Pg.273]    [Pg.454]    [Pg.455]    [Pg.899]    [Pg.329]    [Pg.170]    [Pg.258]    [Pg.263]    [Pg.272]    [Pg.454]    [Pg.259]    [Pg.264]    [Pg.273]    [Pg.454]    [Pg.455]    [Pg.899]   
See also in sourсe #XX -- [ Pg.167 ]



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