dye|World dye variety

Name:C.I.Acid Brown 43,C.I.20300

Molecular Structure: Double azo class

C.I.Acid Brown 43,C.I.20300,CAS 12219-88-4,556.48,C22H14N4Na2O7S2

Molecular Formula:C₂₂H₁₄N₄Na₂O₇S₂

Molecular Weight: 556.48

CAS Registry Number: 12219-88-4

Manufacturing Methods : 4-Aminobenzenesulfonic acid (2 Moore) diazo, in the presence of sodium hydroxide with Naphthalen-1-ol coupling.

Properties and Applications: : yellow light brown. Soluble in water for red light brown. The strong sulfuric acid for purple, for yellow brown after diluted. In water solution to join hydrochloric acid has the purple precipitation; Add sodium hydroxide is cherry red.

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