dye|World dye variety

Name:C.I.Direct Red 148,C.I.25005

Molecular Structure: Double azo class

C.I.Direct Red 148,C.I.25005,CAS 6661-22-9,772.68,C32H22N8Na2O9S2,Diazophenyl Bordeaux B

Molecular Formula:C₃₂H₂₂N₈Na₂O₉S₂

Molecular Weight: 772.68

CAS Registry Number:6661-22-9

Manufacturing Methods : (a), M-nitroaniline diazo, in alkaline conditions and 7-Amino-4-hydroxynaphthalene-2-sulfonic acid coupling, then use glucose and sodium hydroxide solution will nitro reduction; (b) 3-(3-(3-Aminophenyl)-1-oxadiaziridin-2-yl)benzenamine double nitriding, in alkaline conditions and 7-Amino-4-hydroxynaphthalene-2-sulfonic acid (2 Moore) coupled.

Properties and Applications: dark red Claret to light purple. Soluble in water for palm light orange, slightly soluble in alcohol. The strong sulfuric acid for blu-ray red, diluted light orange for subtle stitching. The dye solution to join strong hydrochloric acid for red orange; Add thick sodium hydroxide solution for palm light orange

List of Suppliers:

Diazophenyl Bordeaux B( Geigy Co. Ltd )