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. In industrial settings, it functions as a catalyst, pH buffer, and surface-active agent across chemical processing and treatment applications.

In textile and leather processing, it acts as a wetting and penetration aid, improving dye uptake and surface uniformity on fibrous substrates. Coatings and adhesive formulators use it to modify surface energy and promote substrate adhesion in aqueous systems.

Water treatment programs incorporate it as a buffering agent where controlled pH and mild surface activity are required simultaneously. In paper manufacturing, it supports surface sizing and coating formulations where consistent pH regulation directly affects product quality.

3-Phenolsulfonic acid is supplied as an aqueous solution, with concentration levels varying by supplier and end-use requirement. Technical grade is the standard commercial form for industrial applications.

Packaging ranges from drums to IBC totes, suited to bulk procurement in manufacturing environments. This chemical intermediate is valued for its dual functionality in complex formulations requiring both acidity and surface modification.

The compound's stability and solubility make it a versatile choice for manufacturers seeking reliable performance in aqueous environments. It remains a staple component in specialized chemical synthesis and industrial surface treatments.