dye|World dye variety

Name:C.I.Food Yellow 4:2,C.I.19140:2

Molecular Structure: Single azo class

C.I.Food Yellow 4:2,C.I.19140:2,CAS 97375-39-8,C16H12N4O9S2,556.62

Molecular Formula:C₁₆H₁₂N₄O₉S₂

Molecular Weight: 556.62

CAS Registry Number:97375-39-8

Manufacturing Methods : 4-Aminobenzenesulfonic acid diazo, and 5-Oxo-1-(4-sulfophenyl)-4,5-dihydro-1H-pyrazole-3-carboxylic acid  coupling, and then into zirconium salt deposit color.

Properties and Applications: yellow.

List of Suppliers:

D&C Yellow 5 Zirconium Lake ( Warner-Jenkinson Co )