basic dye

Mordant is any substance that can be fixed to fiber and later dyed on. Hydroxides or basic salts of chromium aluminium or iron are examples. Tannic acid is a suitable mordant for basic dyes. The fabric is first dipped into the solution of mordant and then in the ..

These can be directly applied by immersing the cloth in a hot solution of the dye in water. They can be again classified into acid and basic dyes. Acid dyes are sodium salts of sulphonic acid and nitrophenols. They are used for dyeing animal fibers..

Aniline Yellow (Amino azobenzene) as a Dye - This is another azodye and has little value as a dye. This is because it is sensitive to acids. This is the simplest basic azo dye. This can be obtained by coupling benzene diazomium chloride with anilin..

This is another azodye and has little value as a dye. This is because it is sensitive to acids. This is the simplest basic azo dye. This can be obtained by coupling benzene diazomium chloride with aniline. ..

. Litmus, a purple dye extracted from the lichen plant, is commonly used as an indicator in laboratories. Acids change the colour of litmus solution to red, and bases change the colour of litmus solution to blue. Turmeric is another common household indicator. A stain of turmeric based fo..

Nitric acid has important commercial applications. It is used in: The manufacture of important fertilizers such as ammonium nitrate and basic calcium nitrate. The manufacture of explosives like T.N.T, nitroglycerine, etc. Rocket propellants: as an oxidizer. Manufacture of artificial silk,..

Acidic substances generate H + ions in the medium, while basic ones liberate OH - ions in the medium Certain dyes are used as indicators to detect the presence of acids and bases Strength of an acid depends on the concentration of hydronium ions present in a solution. ..

Amines are alkyl or aryl derivatives of NH 3 . Amines have pyramidal structure with bond angle around N depending upon size and number of alkyl groups linked to N atom. Amines can be prepared by i) Ammonolysis of alkyl halides ii) Reduction of nitro compounds. iii) Reduction of cyanides, a..

. It is manufactured by the Ostwald's Process by the reaction of ammonia and air in presence of platinum as catalyst at 700-800 o C. Nitric acid is colourless in pure form. Commercial nitric acid is yellowish due to the presence of dissolved nitrogen dioxide. Basic oxide + nitric acid ---..