dye|World dye variety

Name:C.I.Direct Red 149,C.I.29110

Molecular Structure: Double azo class

C.I.Direct Red 149,C.I.29110,CAS 6420-39-9,743.68,C32H23N7Na2O8S2

Molecular Formula:C₃₂H₂₃N₇Na₂O₈S₂

Molecular Weight: 743.68

CAS Registry Number:6420-39-9

Manufacturing Methods : N-(3-aminophenyl)formamide (2 Moore) diazo, and Bis(4-hydroxy-2-sulfonaphthalene-7-yl)amine coupling, and then hydrolysis formex amino.

Properties and Applications: Claret. Soluble in water and ethanol for blue-ray red. The strong sulfuric acid in Red sauce for, diluted solution for Red, dark blue light Red precipitate. The dye solution to join strong hydrochloric acid is Claret precipitation; Add thick sodium hydroxide solution for orange brown.

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