Classification of dyes - direct dyes, Chemistry

Assignment Help:

Classification of dyes according to their application

Direct dyes:

this type of dyes can be directly applied to the fiber, both vegetable and animal, by dipping in hot aqueous solution of the dye. This type of dyes is most significant for those fabrics that can form hydrogen bonds, that is for rayon, wool, silk, cotton and nylon. Congo and Martius yellow red work as direct dyes. Instances are: Martius yellow, congo red.


Related Discussions:- Classification of dyes - direct dyes

Determine the density of salt, A tank contains 50 gal of a solution of NaCl...

A tank contains 50 gal of a solution of NaCl in water (20% wt). To wash the tank, we supply fresh water at 10 gal/min and drain the tank at the constant rate of 10 gal/min. Determi

Surface- chemistry, Why are the substances like platinum and palladium ofte...

Why are the substances like platinum and palladium often used for carrying out electrolysis of aqueous solutions?  Ans) Substance like platinum and palladium often often used for

What are the physical properties of nitric acid, Q. What are the Physical P...

Q. What are the Physical Properties of Nitric Acid? Ans. Nitric acid (HNO 3 ) may be prepared by heating sodium nitrate with sulfuric acid: NaNO 3 + H 2 SO 4 --> HNO

Trace and ultratrace analysis, Trace and ultratrace analysis: The accu...

Trace and ultratrace analysis: The accuracy, precision and detection limits of flame AAS depend on how the analyte sample is introduced into the atomiser. We need to transfer

Calculate the number of double bond equivalents, Compound A has the molecul...

Compound A has the molecular formula C 4 H 8 O 2 . Figure 1 gives the infrared spectra of compound A. Table gives the chemical shifts and multiplicity data of the broad-ban

Benzaldehyde, Preparation of benzaldehyde by etard''s reaction

Preparation of benzaldehyde by etard''s reaction

The positive charge of an atom, The positive charge of an atom is: (1) ...

The positive charge of an atom is: (1) Spread all over the atom    (2) Distributed around the nucleus  (3)Concentrated at the nucleus (4) All of these Ans: Concentr

Octahedral-and-tetrahedral-voids, How many octahedral and tetrahedral voids...

How many octahedral and tetrahedral voids are present in HCP? Ans) octa -no of atoms prsnt ,nd tetra -twice of it.

THROPE REACTION, WHAT ARE THE LIMITATION OF THROPE REACTION?

WHAT ARE THE LIMITATION OF THROPE REACTION?

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