dye|World dye variety

Name:C.I.Direct Yellow 74,C.I.25130

Molecular Structure: Double azo class

C.I.Direct Yellow 74,C.I.25130,CAS 6391-20-4,762.57,C26H14N4Na4O12S3,Ergan Soga Koening MAS

Molecular Formula:C₂₆H₁₄N₄Na₄O₁₂S₃

Molecular Weight: 762.57

CAS Registry Number:6391-20-4

Manufacturing Methods :  2-(2-Sulfo-4-aminophenylthio)-5-aminobenzenesulfonic acid double nitriding, and 2-Hydroxybenzoic acid (2 Moore) coupled.

Properties and Applications: red light yellow. Soluble in water for red light yellow to orange, soluble in ethanol. In the strong sulfuric acid to red, yellow for green light after diluted. The dye solution to join strong hydrochloric acid for olive brown, have precipitation; Add thick sodium hydroxide solution for orange brown.

List of Suppliers:

Ergan Soga Koening MAS( Bayer Group )