BORDEAUX RED

Chemical properties

bordeaux to red-brown powder

The Uses of BORDEAUX RED

Bordeaux red is an organic, water-soluble synthetic dye used as a colourant in foods and in the textile industry. A pollutant removed from wastewater using graphene oxide functionalized magnetic chitosan composite.

Preparation

Naphthalen-1-amine diazo, coupled with 3-Hydroxynaphthalene-2,7-disulfonic acid.

Properties and Applications

blue-ray red. Purple powder. Soluble in water is product red, slightly soluble in ethanol, insoluble in other organic solvents. The dye in strong sulfuric acid is deep blue, it will be diluted red for product; Slightly soluble in nitric acid blue light is red, yellow for change after red; 10% sodium hydroxide solution in a red light brown solution. Its water solution and strong hydrochloric acid is dark red; Add sodium hydroxide for orange brown. Used for wool, silk products dyeing, leather, paper, biological products dyeing. Its Barium salt can be used as organic pigments.