Dyes - chemistry in action, Chemistry

Assignment Help:

Dyes

Dye is a synthetic and natural colouring matter that is employed in solution to stain materials particularly fabrics. All the coloured substances are not dyes. A coloured substance is known as a dye if it fulfills the subsequent conditions,

1. It should have an appropriate colour.

2. It may be lasting on the fabric either directly or with the help of mordant.

3. while fixed it must be fast to light and washing, that is it has to be resistant to the action of acids, water and alkalies, majorly to alkalies as washing soda and soap have alkaline nature.


Related Discussions:- Dyes - chemistry in action

Determine the calories, The Calorie, used to express food heat values, is s...

The Calorie, used to express food heat values, is similar as a kilocalorie of heat energy . If you eat a chocolate bar from the United States with 600 Calories of food energy, how

Streptomycin - drugs and medicines, Streptomycin: It was discovered in ...

Streptomycin: It was discovered in the year 1944 by Waksman. Streptomycin is successful against tuberculosis. It is as well used for other general infections such as ears, thro

Define the methods of shelf life examination, Q. Define the Methods of shel...

Q. Define the Methods of shelf life examination? Methods of shelf life examination are sensory evaluation, chemical analysis and microbiological analysis.

Crude and dietary fibre, Q. Crude and Dietary Fibre? Crude fibre is the...

Q. Crude and Dietary Fibre? Crude fibre is the organic residue which remains after the food sample has been treated with boiling dilute sulphuric acid, boiling dilute sodiu

Electrochemistry, The standard EMF of Pt/H2(g)/HCl(aq)//AgCl(aq)/Ag has bee...

The standard EMF of Pt/H2(g)/HCl(aq)//AgCl(aq)/Ag has been experimentally determined from 0-90?C to yield the following; E?/V =0.23659 – 4.856 * 10-4t(?C) – 3.4205 * 10-4t2(?C) +

Explain the process for rate equation expression., The mathematical express...

The mathematical expression used for expressing the rates of chemical reaction is given below by taking two different set of chemical reactions.      Reactions involving same s

Mass Number, What is meant by ''mass number''

What is meant by ''mass number''

Azimuthal quantum number for last electron of na atom, Azimuthal quantum n...

Azimuthal quantum number for last electron of Na  atom is: (1) 1               (2) 2         (3) 3                (4) 0 Ans:  0

Solid state, How does crystallography help in study of crystal structure

How does crystallography help in study of crystal structure

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