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

Define alcoholic acidity, Q. Define Alcoholic Acidity? Alcoholic acidit...

Q. Define Alcoholic Acidity? Alcoholic acidity is defined as mg of H 2 SO 4 required for 100 g of the sample to have the same alcohol soluble acids. Grains or their milled

Catalytic activity of metalloenzymes, Q. Catalytic activity of metalloenzym...

Q. Catalytic activity of metalloenzymes? Catalytic activity of metalloenzymes depends on the complex form in ability of a particular metal ion. One specific example is carbonic

Explain sources of antioxidants, Sources of antioxidants The primary bi...

Sources of antioxidants The primary biological role of antioxidant is in preventing the damage that reactive free radical can cause to cells and cellular compounds. In fact, al

Determine nitrogen has the electronic configuration, Nitrogen has the elect...

Nitrogen has the electronic configuration  1s 2 , 2s 2 , 2p 1 x , 2p 1 y , 2 p 1 z   and not 1s 2 , 2s 2 , 2p 2 x , 2p 1 y , 2 p 0 z      which is determined by: (1) Aufb

Explain about the interfacial defects, Interfacial Defects  Grain bound...

Interfacial Defects  Grain boundaries are interfaces where crystals of dissimilar orientations meet. A grain boundary is a single-phase interface, with crystals on each n every

The bond is formed between similar atoms, Which type of bond is formed betw...

Which type of bond is formed between similar atoms: (1) Ionic    (2) Covalent      (3) Coordinate               (4) Metallic Ans:  Covalent

Liquids- structure of liquids, Structure of liquids: Liquids have a lim...

Structure of liquids: Liquids have a limited degree of short-range order and are most adequately described in terms of a radial distribution function. The probability of findin

Pronouns, i am not able to understand difference between emphasising and re...

i am not able to understand difference between emphasising and reflexive pronoun

Stochiometry, a sample of CaCo3 and MgCo3 weighing 192g is ignited to const...

a sample of CaCo3 and MgCo3 weighing 192g is ignited to constanr weight of 104 gm . what is the composition of mixture ?

Analytical application, how we determine the qualitativ and quantitativ ana...

how we determine the qualitativ and quantitativ analysis of uv

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