dye|World dye variety

Name:C.I.Direct Orange 18,C.I.20215/20216/20230

Molecular Structure: Azo,thiazole class

C.I.Direct Orange 18,C.I.20215/20216/20230,CAS 5863-88-7/5915-60-6,700.75/1083.16,C33H21N6NaO5S3/C48H28N8Na2O8S6

Molecular Formula:C₃₃H₂₁N₆NaO₅S₃/C₄₈H₂₈N₈Na₂O₈S₆

Molecular Weight: 700.75/1083.16

CAS Registry Number:5863-88-7/5915-60-6

Manufacturing Methods : 2-(4-Aminophenyl)-6-methylbenzo[d]thiazole-7-sulfonic acid diazo, Coupled with resorcinol; aniline diazo, and get the single accidentally nitrogen compounds coupling (20215). C.I. Direct Yellow 59 (C.I. 49000) diazo, Coupled with resorcinol;aniline diazo, and get the single accidentally nitrogen compounds coupling (20216). C.I. Direct Yellow 59 (C.I. 49000) (2 Moore) diazo, Coupled with resorcinol (20230).

Properties and Applications: orange to dark orange. Soluble in water for yellow brown, slightly soluble in alcohol. The strong sulfuric acid for orange red to brown, after dilute for orange brown. The dye solution to join strong hydrochloric acid have orange brown precipitation; Sodium hydroxide solution to a wine red precipitate. Used for cellulose fiber dyeing and printing, also can be used for leather and paper color. Copper ions in dyeing reddish dark colored.

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