dye|World dye variety

Name:C.I.Direct Yellow 20,C.I.22410

Molecular Structure: Double azo class

C.I.Direct Yellow 20,C.I.22410,554.46,C28H20N4Na2O6

Molecular Formula:C₂₈H₂₀N₄Na₂O₆

Molecular Weight: 554.46

CAS Registry Number:

Manufacturing Methods : 4-(4-Aminophenyl)benzenamine double nitriding, and 2-Hydroxy-3-methylbenzoic acid (2 Moore) coupled.

Properties and Applications: yellow. Soluble in water for yellow, slightly soluble in benzene, carbon tetrachloride, soluble fiber element and ethanol. The strong sulfuric acid to red light purple, diluted purple for blue-ray, and then a green light yellow precipitation produce; In nitric acid partly dissolved for red light purple, and then into a brown. The dye solution to join strong hydrochloric acid for yellow brown, have precipitation; Add thick sodium hydroxide solution for red light yellow, precipitation. Used for cellulose fiber, silk, wool, polyamide fiber dyeing, leather color. Exhaust dyeing good, good levelness.

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