dye|World dye variety

Name:C.I.Direct Red 154,C.I.28211

Molecular Structure: Double azo class

C.I.Direct Red 154,C.I.28211,690.62,C29H20N6Na2O8S2

Molecular Formula:C₂₉H₂₀N₆Na₂O₈S₂

Molecular Weight: 690.62

CAS Registry Number:

Manufacturing Methods :  4-((4-Aminophenyl)diazenyl)benzenesulfonic acid diazo, and 7-(3-Aminobenzamido)-4-hydroxynaphthalene-2-sulfonic acid coupling.

Properties and Applications: blue-ray red. Soluble in water for red, soluble in ethanol is palm light orange. In the strong sulfuric acid as dark blue, for orange brown after diluted. The dye solution to join strong hydrochloric acid for olive brown precipitation; Add thick sodium hydroxide solution have sauce red precipitate.

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