3-hydroxybenzenesulfonic acid

3-Phenolsulfonic acid (CAS 585-38-6) is an aromatic sulfonic acid combining a hydroxyl and sulfonic acid group on the same benzene ring.

Where is 3-hydroxybenzenesulfonic acid used?

• Chemical processing and treatment: catalyst, pH buffer and surface-active agent
• Textile and leather processing: wetting and penetration aid that improves dye uptake and surface uniformity on fibrous substrates
• Coatings and adhesives: surface-energy modifier that promotes substrate adhesion in aqueous systems
• Water treatment: buffering agent where controlled pH and mild surface activity are required simultaneously
• Paper manufacturing: supports surface sizing and coating formulations where consistent pH regulation affects product quality
• It is a staple component in specialized chemical synthesis and industrial surface treatments.

Commercial specifications

• Technical grade is the standard commercial form
• Packaging ranges from drums to IBC totes for bulk procurement