dye|World dye variety

Name:C.I.Direct Red 127:1,C.I.28240

Molecular Structure: Double azo class

C.I.Direct Red 127:1,C.I.28240,CAS 5873-29-0,718.67,C31H24N6Na2O8S2

Molecular Formula:C₃₁H₂₄N₆Na₂O₈S₂

Molecular Weight: 718.67

CAS Registry Number:5873-29-0

Manufacturing Methods : 2′,3-Dimethyl-4-amino-4′-sulfoazobenzene diazo, and 7-(4-Aminobenzamido)-4-hydroxynaphthalene-2-sulfonic acid coupling.

Properties and Applications: blue-ray red. Soluble in water for blue-ray red, and adequate soluble in alcohol for product red. The strong sulfuric acid in blue, diluted red for brown. The dye solution with strong hydrochloric acid have red orange brown precipitation; Add thick sodium hydroxide solution is Claret precipitation. And C.I. Direct Red 127 similar.

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