4-Hydroxybenzene Sulfonic Acid

4-Hydroxybenzene Sulfonic Acid

4-Hydroxybenzene sulfonic acid (p-Phenolsulfonic acid) is an aromatic sulfonic acid used as a catalyst, electroplating additive, and in the synthesis of dyes and pharmaceuticals.\n\nWidely applied in electroplating baths, as a curing catalyst for phenolic resins, and in pharmaceutical synthesis.