dye|World dye variety

Name:C.I.Direct Orange 74,C.I.28255

Molecular Structure: Double azo class

C.I.Direct Orange 74,C.I.28255,CAS 6104-56-9,975,87,C41H28N7Na3O12S3,Pontamine Diazo Orange 2R

Molecular Formula:C₄₁H₂₈N₇Na₃O₁₂S₃

Molecular Weight: 975,87

CAS Registry Number:6104-56-9

Manufacturing Methods : 7-Aminonaphthalene-1,3-disulfonic acid diazo, and a coupling m-Toluidine condensation, and then will the nitro reductive into amino, its product to diazo, and 7-(4-Aminobenzamido)-4-hydroxynaphthalene-2-sulfonic acid coupling.

Properties and Applications: red light orange. Soluble in water for orange brown, slightly soluble in ethanol is palm light orange. The strong sulfuric acid for blue-ray in red, for orange brown after diluted. The dye solution to join strong hydrochloric acid have dark brown precipitation; Add thick nitrogen oxidation sodium solution have orange brown precipitation. Used for cellulose fiber dyeing, Exhaust dyeing and levelness are good.

List of Suppliers:

Pontamine Diazo Orange 2R( Classic Dyestuffs Inc )