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

Standard molar reaction enthalpy and temperature dependence, Q: For a homog...

Q: For a homogeneous reaction in which the reactants and products are solutes in a solution, write a rigorous relation between the standard molar reaction enthalpy and the temperat

Inorganic chemistry, H2O is liquid buy why H2s gas? who it is one group.

H2O is liquid buy why H2s gas? who it is one group.

Calculate the activity of nuclides, Calculate the activity of nuclides: ...

Calculate the activity of nuclides: Problem: 100 mg piece of a gold ornament containing 10% copper as impurity was irradiated with thermal neutrons at 2.1×10 11 n/cm 2

The ketone is more stable than its enol, The ketone is more stable than its...

The ketone is more stable than its enol Because the ketone is more stable than its enol, more energy must be expended for it to ionize.  Consequently, the ketone is less aci

Hell volhard-zelinsky reaction - carboxylic acids, Hell Volhard-zelinsky re...

Hell Volhard-zelinsky reaction In presence of Red P and diffused light or Hell Volhard-zelinsky reaction Carboxylic acid comprising an α-hydrogen react with Cl 2 or Br 2 i

Merits of atomic fluorescence spectrometry technique, Merits of atomic fluo...

Merits of atomic fluorescence spectrometry technique: The merit of the AFS methods lies within the greater sensitivity achievable because of low background and interference.

Thermometric titration, question..give brif instrumentation of thermometric...

question..give brif instrumentation of thermometric titration

Soaps - oils and fats, Soaps - Oils and fats Soaps are the metallic sal...

Soaps - Oils and fats Soaps are the metallic salts of higher fatty acids like stearic, palmitic, oleic, etc. The potassium and sodium salts are the common soaps that are solubl

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