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

Importance of moisture content of the flour, Q. Importance of Moisture cont...

Q. Importance of Moisture content of the flour? Moisture content of the flour is an important parameter and does not remain the same throughout the period of storage. As the fo

Uses of acetone - aldehydes and ketones, Uses of Acetone - Aldehydes and Ke...

Uses of Acetone - Aldehydes and Ketones (a) It is used as a solvent for cellulose acetate, cellulose nitrate, celluloid, lacquers, resins, etc. (b) It is used for storing ac

What do you understand by replication by dna, (a) Write chemical equations ...

(a) Write chemical equations for the reactions of glucose with (i) Acetic anhydride and (ii) ammoniacal silver nitrate solution. (b) Draw simple Fischer projections of D-g

Derive gibbs duhem equation, (a) Derive a relationship between the elevatio...

(a) Derive a relationship between the elevation in boiling point of a solution and the mole fraction of the solute from the thermodynamic consideration. (b) The molal elevatio

#gas, two containers are connected by a stopcock. gas A is at pressure 202k...

two containers are connected by a stopcock. gas A is at pressure 202kpa while gas B is at pressure 140kpa, what will be the resultant pressure when the stopcock is opened

Uses of iodoform or tri-iodomethane, Uses of Iodoform or tri-iodomethane ...

Uses of Iodoform or tri-iodomethane (a) Iodoform is utilized as a fire extinguisher under the name pyrene. Dense vapours form a protective layer on the burning objects and avoi

Nmr, Draw C5H10O2 that has the following 1H NMR spectrum: 1.15 (t, 3 H), 1....

Draw C5H10O2 that has the following 1H NMR spectrum: 1.15 (t, 3 H), 1.25 (t, 3 H), 2.33 (q, 2 H), 4.13 (q, 2 H).

Crystalline solids, CRYSTALLINE SOLIDS Solids may be loosely categorize...

CRYSTALLINE SOLIDS Solids may be loosely categorized into two groups. Amorphous solid has no long-range order in their molecular or atomic structure. By their nature Amorphous

Illustrate law of conservation of mass, Q. Illustrate Law of Conservation o...

Q. Illustrate Law of Conservation of Mass? Ans: Conservation of Mass and Atoms: The Law of Conservation of Mass states that mass is neither created nor destroyed. Th

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