Classification of dyes - direct dyes, Chemistry

Assignment Help:

Classification of dyes according to their application

Direct dyes:

this type of dyes can be directly applied to the fiber, both vegetable and animal, by dipping in hot aqueous solution of the dye. This type of dyes is most significant for those fabrics that can form hydrogen bonds, that is for rayon, wool, silk, cotton and nylon. Congo and Martius yellow red work as direct dyes. Instances are: Martius yellow, congo red.


Related Discussions:- Classification of dyes - direct dyes

Explain about structural isomerism, Q. Explain about Structural Isomerism? ...

Q. Explain about Structural Isomerism? When two molecules have the same atoms but different bonds, they are called structural isomers. Thus, the variation of bond type or multi

Give the general formula of organic acids, Q. Give the general formula of O...

Q. Give the general formula of Organic Acids? Ans. Organic acids have the general formula RCOOH. The R- is an alkyl group or hydrogen. The functional group is -COOH and

What are the various types of electrodes?, Some important types of electrod...

Some important types of electrodes which are frequently used in electrochemical cells are described as follows:     Metal-metal ion electrode: such type of electrodes includes a

Maximum number of electrons present in n, Maximum number of electrons prese...

Maximum number of electrons present in N  shell is: (1) 18              (2) 32        (3) 2              (4) 8 Ans: 32

Local anesthetics - drugs and medicines, Local Anesthetics: These infl...

Local Anesthetics: These influence just only a part of the body insensitive to pain or feeling. Common local Anesthetics are: xylocaine (employed in jelly form), ethyl chlorid

Solid state, What are laws of crystallography? How does it help in study of...

What are laws of crystallography? How does it help in study of crystal structure

Energy of second bohr orbit of the hydrogen atom & energy, The energy of se...

The energy of second Bohr orbit of the hydrogen atom is -328 kJ mol-1, hence the energy of fourth Bohr orbit would be: (1) - 41 kJ mol -1 (2) -1312 kJ mol -1   (3) -164

Homework help, seawater contains 0.75g of Fe+3 per kilogram of water. What ...

seawater contains 0.75g of Fe+3 per kilogram of water. What is the concentration of Fe_3 in ppm?

Name the carbon and its allotropes, Carbon and its allotropes Diamo...

Carbon and its allotropes Diamond - an extremely hard, transparent crystal, with the carbon atoms arranged in a tetrahedral lattice. A poor electrical conductor. An excelle

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd