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

How to calculate caco3 equivalent , Q.  Ca +2 = 20 ppm, Mg +2 = 25 p...

Q.  Ca +2 = 20 ppm, Mg +2 = 25 ppm, CO 2 = 30 ppm, HCO - 3 = 150, K + = 10 ppm. Calculate the lime (87% pure) and soda (91% pure) required softening 1 million litt

Westron, how to prepare westron from acetylene

how to prepare westron from acetylene

Chapter two, has gold a chemical proporties show/

has gold a chemical proporties show/

Uses of urea or carbamide - carboxylic acids, Uses of Urea or Carbamide - C...

Uses of Urea or Carbamide - Carboxylic Acids (a) Urea is used mainly as a nitrogen fertilizer. It has 46.4% nitrogen. (b) Urea is used in the manufacture of formaldehyde-ure

Composition of individual phase in phase diagram – two phase, Explain Compo...

Explain Composition of individual phase in phase diagram – two phase? If the system point is in a two-phase area of the phase diagram, we draw a horizontal tie line of constant

Non-benzenoid aromatics and heterocyclic compounds, Non-benzenoid aromatics...

Non-benzenoid aromatics and Heterocyclic compounds There are aromatic compounds that have structural units which are not same from benzenoid type and are termed as Non-benzeno

Borozole, write a short notes on borozole

write a short notes on borozole

Millon test - test of proteins, Millon test - Test of proteins Millon's...

Millon test - Test of proteins Millon's test : while millon's reagent (mercurous & mercuric nitrate in nitric acid) is added to a protein solution, a white precipitate that tur

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