dye|World dye variety

Name:C.I.Direct Brown 30,C.I.17630

Molecular Structure: Single azo class

C.I.Direct Brown 30,C.I.17630,CAS 6222-60-2,823.85,C37H23N5Na2O7S4

Molecular Formula:C₃₇H₂₃N₅Na₂O₇S₄

Molecular Weight: 823.85

CAS Registry Number:6222-60-2

Manufacturing Methods :  p-Methylaniline (2 Moore) and sulfur (4.5 atomic ratio) in 200 ~ 280 ℃ heat, with hair smoke products have been Primulin alkali. Its product (C.I. Direct Yellow 59, C.I. 49000) diazo, in alkaline conditions and 4-Hydroxy-6-(phenylamino)naphthalene-2-sulfonic acid coupling. In some brands of C.I. Direct Yellow 59 can all or part of the content and dehydrogenation was 2-(2-(4Aminophenyl)benzo[d]thiazol-6-yl)-6-methylbenzo[d]thiazole-7-sulfonic acid instead.

Properties and Applications: dark brown. Soluble in water for yellow olive brown, soluble in alcohol. For the strong sulfuric acid in purplish red, yellow light is palm diluted to olive. The dye solution to join strong hydrochloric acid have yellow olive precipitation; Add thick sodium hydroxide solution with olives brown precipitation.

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