Sodium benzenesulfonate is an organic compound with the formula C6H5SO3Na.

It is white, water-soluble solid, It is produced by the neutralization benzenesulfonic acid with sodium hydroxide.

It is also a common ingredient in some detergents.

The compound typically crystallizes from water as the monohydrate.

[1] Heating this salt in strong base results in desulfonation, giving, after acid workup, phenol[2] This reaction was at one time, the principal route to phenol.