dye|World dye variety

Name:C.I.Direct Red 73,C.I.29180

Molecular Structure: Double azo class

C.I.Direct Red 73,C.I.29180,CAS 6406-01-1,922.81,C38H25N6Na3O12S3

Molecular Formula:C₃₈H₂₅N₆Na₃O₁₂S₃

Molecular Weight: 922.81

CAS Registry Number:6406-01-1

Manufacturing Methods : 6-Aminonaphthalene-2-sulfonic acid diazo, and N,N’-bis(4-hydroxy-2-sulfonaphthalene-7-yl)urea coupling, O-Methylaniline diazo, and coupled product matches.

Properties and Applications: red. Soluble in water for yellow light red, soluble in soluble fiber element, insoluble in organic solvents. The strong sulfuric acid to red light purple, diluted red for yellow light. The dye solution to join sulfuric acid 10% color; Add thick sodium hydroxide solution change to blue and into a dark red.

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