4-Isononylphenol

4-Isononylphenol (CAS 26543-97-5) is an alkylphenol intermediate used in the production of nonionic surfactants, particularly ethoxylated derivatives that drive emulsification and wetting performance.

Where is 4-Isononylphenol used?

• Home care and industrial cleaning: precursor to ethoxylates in heavy-duty degreasers and hard-surface cleaners
• Textile and leather processing: scouring, dyeing auxiliaries and finishing baths
• Coatings and adhesives: emulsifier systems that stabilise resin dispersions and improve substrate wetting
• Polymer manufacturing: reactive intermediate or modifier
• It functions as a building block rather than a finished surfactant.

Commercial specifications

• Technical grade; purity typically 95% upward depending on downstream synthesis
• Bulk quantities in drums and IBC containers