azo dye


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azo dye

n.
Any of various red, brown, or yellow acidic or basic dyes derived from amino compounds.

azo dye

n
(Dyeing) any of a class of artificial dyes that contain the azo group. They are usually red, brown, or yellow and are obtained from aromatic amines

az′o dye`


n.
any of a class of dyes containing one or more azo groups.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.azo dye - any dye containing one or more azo groups
congo red - a red-brown azo dye especially as a chemical pH indicator (congo red is red in basic and blue in acidic solutions)
methyl orange - an azo dye used as an acid-base indicator; used for titrations involving weak bases
dye, dyestuff - a usually soluble substance for staining or coloring e.g. fabrics or hair
References in periodicals archive ?
The produced nanocatalyst showed appropriate performance in increasing the efficiency of the production of azo dye compounds.
It involves different types of tests such as volatile organic compounds (VOCs), Registration Evaluation Authorisation and Restriction of Chemicals (REACH), Restriction of Hazardous Substances (RoHS), Substance of Very High Concern (SVHCR), polycyclic aromatic hydrocarbons (PAH), AZO dye testing, and others.
Process development for the removal of hazardous anionic azo dye Congo red from wastewater by using hen feather as potential adsorbent.
In the category of Beauty, Personal Care and Hygiene Products, DTSC has identified the following chemicals as potential candidate chemicals: phthalates; toluene; aldehydes and formaldehyde; alkyl phenols and ethoxylates; azo dye, coal tars, lead and lead acetate and triclosan.
Laboratory testing has revealed they contained "unacceptable" levels of azo dye.
Some of the known adulterants include amaranth dye (also known as azo dye or Red Dye No.
Phenazopyridine, an azo dye, does not demonstrate interference with the calcium or creatinine assays used in this case (o-cresolphthalein and Jaffe, respectively; Roche Modular P) (2).
22120, is a hazardous azo dye (7), and its use in many countries is prohibited but in those where it is allowed it has gained favor for textile dyeing especially in silk due to its vivid, bright, and striking color.
The heat shielding coating, black base coating and color clear coating are stacked one after another and heat cured, wherein the heat shielding coating is comprised of a compound which does not absorb infrared radiation and has a heat shielding function; wherein the black base coating is comprised of a perylene black pigment, and/or an azomethine pigment, and/or an azo dye, and wherein the color clear coating is comprised of a black dye.
Artificial additives identified by the Food Standards Agency as causing hyperactivity in children:Number: E102 Name: Tartrazine What is it: A synthetic yellow azo dye.
Synthetic coal tar or azo dye - deep red in colour - is used in cakes, desserts, tinned fruits, jellies, sweets, salami, salad dressings, trifles and soft drinks.
Of the 41 medicines, the survey found four azo dye colourings, eight benzoate and two sulphite preservatives, and six sweeteners.