Azoic dye definition is – any of a group of water-insoluble azo dyes formed by coupling of the components on the fiber —called also ice color, ingrain dye. The dyes containing azo groups – N = N – are called Azoic Dye. These are not ready made dyes but are produced by reaction of two. Structure, Chemical Name, CAS, MF. 4-Chloronitroaniline · , C6H5ClN2O2. 3-Chloromethylaniline · , C7H8ClN. 2-Amino

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Now treating the above naptholated or impregnated goods for 2 — 3 minutes in this bath. Normally two baths are needed for dyeing: Dyed Azoic Dyes insoluble azo group are present. These dye stuffs always contain Azo groups in its chemical structure. In the 2nd bath, Base or Salt is used for dyeing.

Azoic dyes

Now treat the sample up to boiling stage. Dyestuff always used in cellulosic materials. Brightness of azoic dye is good. We all scream for In order to affect satisfactory stripping Lissol Amine — A is used.

An overview of Azo dyes

Suitable for lighter shade dyeing Light resistance: Statistics for azoic dye Look-up Popularity. Xyes name AZO has been derived from the word azote and it meant nitrogen in the ancient time in French.

Azoic Dye is not ready-made but this Azoic Dye is produced by the reaction of two components. The yellow combination with AS — G and those with napthol of high substantivity are the most difficult one to strip.


Addition of salt increases substantively. This dyestuff always contains azo groups in its chemical structure. The required color can be changed by altering of the diazoic and coupling components. Please tell us where you read or heard it including the quote, if possible.

Azoic Dyes,Nepthol Dyes,Azoic Dyes Manufacturer,Nepthol Dyes Supplier

Napthol dispersed in alcohol T. Finally add NaCl in the developing bath. Staple length is also most important fiber characteristics.

Napthol dispersed in alcohol, T. But we learn about the printing of cotton fabric with azoic dye. How we chose ‘justice’. For making naphthol solution, at first naphthol and glycerine are added in dye bath. Join Our Free Trial Now! Marker efficiency is directly related to fabric cutting and h Our naphtholation process was not so sufficient. When these dyes are used upon the cellulose fabric then initially this fabric starts to suffer from poor rub fastness.

The coupling component is finally soluble in diazotization reaction. Definition, types and end uses Fabric Selvage Definition and types of yarn count Types and flow-chart of jute processing What is Resin finishing?

Properties and Advantages of Azoic Dye – Textile Chapter

It is a platform to express your knowledge throughout the world. In this way, dyeing procedure is completed. Subscribe to America’s largest dictionary and get thousands more definitions and advanced search—ad free! Then acetic acid and sodium acetate are added into aaoic dye bath.


How to use a word that literally drives some people nuts. Azoid fastness is very good here. These dyes cannot be applied directly on the fibers as dyes.

Difference between Fast Salt and Fast Base. AZO Dyeing Process is such a process in which the insoluble azoic dye is produced on the or within the fiber. Azoic Dyes are also called as Azoic or Nepthol Dyes.

The awkward case of ‘his or her’. Ask the Editors Word of the Year: It is produced by reacting two components named coupling method and diazo component. The environmental impact is low here. These are di-azo components and naphthol.

The quantity of hydro — sulphide is increased in the case of yellow combination. Some names of Azoic-Dyes are: Dye formation in fiber occurs on the basis of coupling reaction. Function of different chemicals used in Napthol Dyeing. This dye stuff is called developed dye due to formation of dye in fiber during dyeing process.

Index is 2 to 4.