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Acid Orange 7, also known as 2-naphthol orange is an azo dye. It is used for dyeing wool. Preparation It is ...
Orange GGN, also known as alpha-naphthol orange, is an azo dye [1] formerly used as a food dye.It is the disodium salt of 1-(m-sulfophenylazo)-2-naphthol-6-sulfonic acid.In Europe, it was denoted by the E Number E111, but has been forbidden for use in foods since 1 January 1978. [2]
2-Naphthol, or β-naphthol, is a fluorescent colorless (or occasionally yellow) crystalline solid with the formula C 10 H 7 OH. It is an isomer of 1-naphthol , differing by the location of the hydroxyl group on the naphthalene ring.
2-Naphthol: β-naphthol Azoic coupling component 1 37500 diazonium salt 135-19-3: Naphthol green B: Acid green 1 10020 nitroso 19381-50-1: Naphthol yellow S: Sulfur yellow S Acid yellow 1 Food yellow 1 10316 nitro 846-70-8: Naphthylamin Brown F Acid brown 6 14625 azo 6419-10-5: Neutral red: Toluylene red Basic red 5 50040 eurhodin 553-24-2: New ...
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The reaction is faster at high pH. [2] Many other azo dyes have been prepared by similarly. Several procedures have been described in detail. [5] [6] [7] Naphthols are popular coupling agents. One example is the synthesis of the dye "organol brown" from aniline and 1-naphthol: Synthesis of organol brown from aniline and 1-naphthol
The following other wikis use this file: Usage on azb.wikipedia.org اسید نارینجی ۷; Usage on de.wikipedia.org Acid Orange 7; Usage on en.wikibooks.org
Due to this significant use, the azoreductase gene from X. azovorans strain KF46F T was purified using affinity chromatography methods and cloned using PCR. [24] Specifically, the gene has been determined to have high activity with the following azo dyes: Acid Orange 7, 1-(2-Pyridylazo)-2-naphthol, Solvent Orange 7, and Acid Red 88. [24]