dye|World dye variety

Name:C.I.Direct Black 11,C.I.30240

Molecular Structure:trisazo class

C.I.Direct Black 11,C.I.30240,816.18,C34H24ClN9Na2O7S2

Molecular Formula:C₃₄H₂₄ClN₉Na₂O₇S₂

Molecular Weight: 816.18

CAS Registry Number:

Manufacturing Methods : 4-(4-Aminophenyl)benzenamine double nitriding, and aniline diazo, in alkaline conditions and 4-Amino-5-hydroxynaphthalene-2,7-disulfonic acid and products in the coupling acid conditions coupled, then and 4-Chlorobenzene-1,3-diamine coupling.

Properties and Applications: green and black. For to black soluble in water, soluble in ethanol for blue-ray gray. The strong sulfuric acid solution for the red light in blue, diluted red for sauce; In strong hydrochloric acid for purple solution. The dye solution to join strong hydrochloric acid have sauce red precipitate; Add thick sodium hydroxide solution for blue-ray gray, precipitation.

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