azo compound

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azo compound

Any of the organic substances that contain the azo group. An example is azobenzene, C6H5N:NC6H5. They are related to aniline and include important dyes and indicators.
See: indicator for table
See also: compound
References in periodicals archive ?
Treatment of orange II azo-dye by electrocoagulation (EC) technique in a continuous flow cell using sacrificial iron electrodes.
Therefore, in order to achieve the desire color, poultry and feed producers usually combine a yellow carotenoid in the diet by adding natural lutein (apo-ester, lutein, or zeaxanthin), a synthetic red one (canthaxanthin) and orange-II, which is a banned dye belonging to a class of organic compounds known as azo-dyes (Mollah et al.
David and Steven (1994) reported that azo-dyes are also degraded efficiently under aerobic conditions by wood rotting fungi which are in nature responsible for the degradation of lignin.
Keeping in view the importance of this class of interesting compounds, we embarked a project to synthesize some highly interesting azo-dyes starting from 4-methoxyanniline and 4-aminophenazone.
This durability nature makes azo-dyes as pollutants in the environment as the dyes discharged into the environment as effluent.
We think that for all these reasons (purity, quality, reliable supply and excellent price/performance ratio) using nature-identical beta-carotene and lycopene is the best way to replace azo-dyes with red, yellow or orange colour.
Kirkan, Synthesis and Spectroscopic Properties of New Azo-Dyes and Azo-Metal Complexes derived from Barbituric Acid and Aminoquinoline, Dyes.
Azo-dyes photo catalytic degradation in aqueous suspension of TiO2 under solar irradiation, chemosphere, 49: 1223-1230.
A packed-bed fungal bioreactor for the continuous decolourisation of azo-dyes (Orange II).
Azo-dyesThe Parliament adopted the report and the proposed recommendation that were presented together by Emmanouil Bakopoulos (EUL, Greece) thus supporting the common position adopted by the Council on the draft Directive on the marketing and use of azo-dyes (19th modification of the Directive 76/769/EEC).