Name:C.I.Solvent Yellow 57,C.I.19140
Molecular Structure: Single azo class
Molecular Weight: 468.42
CAS Registry Number:742-01-8
Manufacturing Methods : (a) 4-Aminobenzenesulfonic acid diazotization, and 5-Oxo-1-(4-sulfophenyl)-4,5-dihydro-1H-pyrazole-3-carboxylic acid coupling; (b) 2 Moore 4-Hydrazinobenzenesulfonic acid and Dioxo acid reaction.
Properties and Applications: yellow. C.I. Acid Yellow 23 organic salts. Used for alcohol solution and cellulose class paint color, also used in ink.
List of Suppliers:
Lampronol Yellow J( Francolor Pigments SA )