dye|World dye variety

Name:C.I.Direct Orange 2,C.I.22380

Molecular Structure: Double azo class

C.I.Direct Orange 2,C.I.22380,CAS 8005-97-8,846.62/694.51,C33H18N6Na4O12S2/C29H17N6Na3O9S

Molecular Formula:C₃₃H₁₈N₆Na₄O₁₂S₂/C₂₉H₁₇N₆Na₃O₉S

Molecular Weight: 846.62/694,51

CAS Registry Number:8005-97-8

Manufacturing Methods : 4-(4-Aminophenyl)benzenamine double nitriding, first with 2-Hydroxybenzoic acid coupling, again with 6-(3-Methyl-5-oxo-4,5-dihydropyrazol-1-yl)naphthalene-1,3-disulfonic acid (0.75 Moore) and 1-(3-Sulfophenyl)-3-methyl-5-pyrazolone (0.25 Moore) coupled.

Properties and Applications: orange. Soluble in water for gold orange, and adequate soluble in ethanol for golden brown. The strong sulfuric acid for blue-ray red to purple, diluted for golden brown. The dye solution to join strong hydrochloric acid for yellow olive, and have precipitation; Add thick sodium hydroxide solution for orange. Apply to cotton dyeing, can also be used to soap class, paper and leather color. White sex is good, alkaline white poor. Copper ions in dyeing color is red; Iron ion in the red light. Exhaust dyeing.

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