dye|World dye variety

Name:C.I.Acid Brown 91,C.I.17550

Molecular Structure: Single azo class

C.I.Acid Brown 91,C.I.17550,CAS 6222-54-4,495.44,C18H15N3Na2O7S2,Igenal Brown PTF

Molecular Formula:C₁₈H₁₅N₃Na₂O₇S₂

Molecular Weight: 495.44

CAS Registry Number: 6222-54-4

Manufacturing Methods :   (4-Aminophenyl)methanesulfonic acid  diazo, in alkaline conditions and 4-Hydroxy-6-(methylamino)naphthalene-2-sulfonic acid coupling.

Properties and Applications: Dark time Soluble in water and ethanol is brown. The strong sulfuric acid for dark orange-red, diluted into palm orange. In water solution to join strong hydrochloric acid for olive brown; Add thick sodium hydroxide solution by red brown into wine red.

List of Suppliers:

Igenal Brown PTF( IG Farbenindustrie AG )