C6H5SOH

C6H5SOH is the chemical formula for benzenesulfonic acid. It is an organosulfur compound and a strong organic acid. Benzenesulfonic acid consists of a phenyl group bonded to a sulfonic acid functional group (SO3H). It is a white, crystalline solid that is soluble in water and polar organic solvents. The compound is typically produced by the sulfonation of benzene using fuming sulfuric acid.

Benzenesulfonic acid is an important intermediate in the synthesis of various organic compounds. It is used in the production of dyes, pharmaceuticals, and detergents. Its salts, known as benzenesulfonates, also find applications. For instance, sodium benzenesulfonate is used as a hydrotrope, a substance that increases the solubility of poorly soluble organic compounds in water. The strong acidity of benzenesulfonic acid makes it a useful catalyst in certain organic reactions, such as esterification and alkylation. It is also employed in the synthesis of phenolic compounds through processes like alkaline fusion. While it is a strong acid, it is generally considered less corrosive than mineral acids like sulfuric acid.