Acid Red 73

The Uses of Acid Red 73

Brilliant Crocein is used mainly as a wool, silk, leather paper and leather dyeing. Can also be used for plastic, wood, spices, electrical-controlled aluminum, medicine color. Can make the ink, the heavy metal salt can be used as pigment.

Definition

ChEBI: An organic sodium salt that is the disodium salt of 7-hydroxy-8-{[4-(phenyldiazenyl)phenyl]diazenyl}naphthalene-1,3-disulfonic acid. Occasionally used for the demonstration of muscle fibres in conjunction with, or as a replacement for, acid fuchsin.

Preparation

4-(Phenyldiazenyl)benzenamine diazo, and 7-Hydroxynaphthalene-1,3-disulfonic acid coupling.

General Description

Acid Red 73 is a synthetically prepared sulfonated azo dye.

Properties and Applications

yellow light red. Yellow light red powder. Soluble in water red solution, soluble in ethanol and soluble fiber element, soluble in acetone, insoluble in other organic solvents. Meet strong sulfuric acid is red purple, diluted red brown in precipitation; Nitric acid in a blue, orange and brown to olive. Its water solution and strong hydrochloric acid generation dark red brown precipitation; Add sodium hydroxide solution generation dark brown precipitation. In dyeing copper and iron ions are darker color. Discharge the gender is good. Mainly used for wool, silk, paper and leather dyeing. Can also be used for plastic, wood, spices, electrical-controlled aluminum, medicine color. Can make the ink, the heavy metal salt can be used as pigment.