dye|World dye variety

Name:C.I.Acid Brown 20,C.I.17640

Molecular Structure: Single azo class

C.I.Acid Brown 20,C.I.17640,CAS 6369-33-1,570.59,C28H27N4NaO6S

Molecular Formula:C₂₈H₂₇N₄NaO₆S

Molecular Weight: 570.59

CAS Registry Number: 6369-33-1

Manufacturing Methods :   N-(3-amino-4-methylphenyl)-N-ethylacetamide diazo, in alkaline conditions and 4-Hydroxy-6-(4-methoxyphenylamino)naphthalene-2-sulfonic acid coupling.

Properties and Applications: ark brown. Soluble in water for brown, and adequate soluble in alcohol for brown. The strong sulfuric acid for cherry red, for brown after diluted. In water solution to join strong hydrochloric acid with olives brown precipitation; Add thick sodium hydroxide solution for red orange brown.

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