dye|World dye variety

Name:C.I.Direct Orange 25,C.I.22135

Molecular Structure: Double azo class

C.I.Direct Orange 25,C.I.22135,CAS 6486-43-7,559.57,C29H22N5NaO4S

Molecular Formula:C₂₉H₂₂N₅NaO₄S

Molecular Weight: 559.57

CAS Registry Number:6486-43-7

Manufacturing Methods : 4-(4-Aminophenyl)benzenamine double nitriding, respectively with the 4-Hydroxynaphthalene-1-sulfonic acid and o-Cresol coupling.

Properties and Applications:  red light orange. Moderate soluble in water for orange brown, slightly soluble in ethanol for gold orange. In the dark for the strong sulfuric acid, diluted for dark purple. The dye solution to join strong hydrochloric acid for violet black, precipitation; Add thick sodium hydroxide solution for yellow orange brown.

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