dye|World dye variety

Name:C.I.Direct Red 85,C.I.28180

Molecular Structure: Double azo class

C.I.Direct Red 85,C.I.28180,CAS 5873-26-7,703.65,C31H23N5Na2O8S2

Molecular Formula:C₃₁H₂₃N₅Na₂O₈S₂

Molecular Weight: 703.65

CAS Registry Number:5873-26-7

Manufacturing Methods :  4-Amino-3-methylbenzenesulfonic acid diazo, coupled with m-Toluidine, its product to diazo, and 7-Benzamido-4-hydroxynaphthalene-2-sulfonic acid coupling.

Properties and Applications: blue-ray red. Soluble in water and ethanol is cherry red. The strong sulfuric acid for blue-ray green, red after diluted purple precipitation. The dye solution to join strong hydrochloric acid has the purple precipitation; Add thick sodium hydroxide solution has the purple precipitation.

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