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Azo dyes are synthetic dyes and do not occur naturally. [2] [3] Most azo dyes contain only one azo group but there are some that contain two or three azo groups, called "diazo dyes" and "triazo dyes" respectively. Azo dyes comprise 60–70% of all dyes used in food and textile industries. [3] Azo dyes are widely used to treat textiles, leather ...
Therefore, they are used as dyes, and are commonly known as azo dyes, an example of which is Disperse Orange 1. Some azo compounds, e.g., methyl orange, are used as acid-base indicators due to the different colors of their acid and salt forms. Most DVD-R/+R and some CD-R discs use blue azo dye as the recording layer. The commercial success of ...
Azobenzene is a photoswitchable chemical compound composed of two phenyl rings linked by a N=N double bond.It is the simplest example of an aryl azo compound.The term 'azobenzene' or simply 'azo' is often used to refer to a wide class of similar compounds.
Azo dyes are dyes with R-N=N-R azo structure as a chromophore. Subcategories. This category has only the following subcategory. D. Diarylide pigments (7 P)
Tartrazine was discovered in 1884 by Swiss chemist Johann Heinrich Ziegler, who developed the yellow azo dye in the laboratories of the Bindschedler'sche Fabrik für chemische Industrie in Basel . This was patented and produced in Germany by BASF in 1885 (DRP 34294).
Allura Red AC, also known as FD&C Red 40 or E129, is a red azo dye commonly used in food. It was developed in 1971 by the Allied Chemical Corporation, who gave the substance its name.
Azoic dyeing is a technique in which an insoluble Azo dye is produced directly onto or within the fiber. This is achieved by treating a fiber with both diazoic and coupling components. With suitable adjustment of dyebath conditions the two components react to produce the required insoluble azo dye.
Azo-eosin Azoeosin G Acid red 4 14710 azo 5858-39-9: Azo Fuchsine 6B Acid violet 7 18055 azo 4321-69-1: Azophloxine: Red 2G Azogeranin B Amidonaphthol red G Acid red 1 Food red 10 18050 azo 3734-67-6: Azorubine: Acid red 14 Food red 3 14720 azo 3567-69-9: Azo violet: Magneson I azo 74-39-5: Azure A: Methylene azure A 52005 thiazin 531-53-3 ...