Sulphonation of Benzene

Sulphonation of Benzene

Sulfonation of benzene is a process of heating benzene with fuming sulphuric acid (H₂SO₄ . SO₃) to produce benzenesulfonic acid. The reaction is reversible in nature.

At higher temperature, two or three —SO₃H may be introduced at 3rd and 5th position.

Mechanism of Sulphonation of Benzene