Sulfuryl Chloride is a pungent, colorless to pale yellow liquid that serves as a highly efficient chlorinating and chlorosulfonating agent. It is often preferred over elemental chlorine for its ease of handling and high regioselectivity in organic synthesis.

This chemical is indispensable for the production of Agrochemicals and pharmaceuticals, where it is used to introduce chlorine or sulfonyl groups into aromatic and aliphatic compounds. Its high reactivity ensures rapid conversions at lower temperatures, preserving sensitive functional groups.

The substance reacts vigorously with water, releasing sulfur dioxide and hydrogen chloride gases, which requires strictly anhydrous handling. Its dual functionality as a source of both chlorine and sulfur dioxide makes it a unique tool for creating complex sulfonamides and esters.