dye|World dye variety

Name:C.I.Direct Yellow 72,C.I.24910

Molecular Structure: Double azo class

C.I.Direct Yellow 72,C.I.24910,CAS 6459-82-1,756.54,C28H16N4Na4O12S2,Golden Yellow GN,Yellow 2GT

Molecular Formula:C₂₈H₁₆N₄Na₄O₁₂S₂

Molecular Weight: 756.54

CAS Registry Number:6459-82-1

Manufacturing Methods : 1,2-Bis(4-amino-2-sulfophenyl)ethene double nitriding, and 2-Hydroxybenzoic acid (2 Moore) coupled.

Properties and Applications: dark red light yellow to orange. Soluble in water for yellow orange, slightly soluble in alcohol. The strong sulfuric acid to red light purple, dilute for dark brown or black after; In nitric acid solution for light yellow, with gray precipitation. The dye solution to join strong hydrochloric acid for dark brown, have precipitation; Add thick sodium hydroxide solution in red.

List of Suppliers:

Garuda Soga Golden Yellow GN( Vondelingerplaat Dyestuffs BV )

Kemanarect Yellow 2GT( Karsandas Mavji )