dye|World dye variety

Name:C.I.Acid Brown 233,C.I.20018

Molecular Structure: Double azo class,Metal Complexes

C.I.Acid Brown 233,C.I.20018,CAS 6408-11-3,379.33,C18H13N5O5

Molecular Formula:C₁₈H₁₃N₅O₅

Molecular Weight: 379.33

CAS Registry Number: 6408-11-3

Manufacturing Methods :2-Amino-4-nitrophenol diazo, Coupled with resorcinol, its product again with diazo of aniline coupling, and then translate into 1:2 chromium complex.

Properties and Applications: red light brown. Soluble in water for brown, soluble in ethanol for red light brown. The strong sulfuric acid for orange brown, diluted for orange brown still. Add in aqueous solution hydrochloric acid have red brown precipitation; Add sodium hydroxide in red.

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