dye|World dye variety

Name:C.I.Direct Brown 165,C.I.22045

Molecular Structure: Double azo class

C.I.Direct Brown 165,C.I.22045,CAS 6486-32-4,677.62,C28H21N7Na2O7S2,Direct Para Brown MV

Molecular Formula:C₂₈H₂₁N₇Na₂O₇S₂

Molecular Weight: 677.62

CAS Registry Number:6486-32-4

Manufacturing Methods : 4-(4-Aminophenyl)benzenamine double nitriding, first in acid conditions and 4-Amino-5-hydroxynaphthalene-2,7-disulfonic acid coupling, and then and Benzene-1,3-diamine coupling.

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

List of Suppliers:

Direct Para Brown MV( Industria Chimica Dott  )