Phenyl j acid

Phenyl J Acid (CAS 119-40-4), also referenced commercially as Phenyl I Acid, is a sulfonated naphthylamine derivative; a key intermediate in the synthesis of azo dyes and reactive colorants.

Where is Phenyl j acid used?

• Textile dyeing: manufacture of reactive and acid azo dyes
• Printing and packaging: dyes for ink formulations where colour precision is critical
• Leather processing: dyes for uniform penetration and surface coloration on finished hides
• Pharmaceutical synthesis: intermediate for select heterocyclic compounds requiring a sulfonated naphthol backbone
• Dyes derived from it bond directly to cellulosic and protein fibers.

Commercial specifications

• Purity specifications typically confirmed by HPLC or titration methods
• Drums and bulk quantities suited to industrial dye manufacturing operations