Benzenesulfonyl chloride

Benzenesulfonyl chloride
Names
	Preferred IUPAC name Benzenesulfonyl chloride
Identifiers
CAS Number	98-09-9 ;
3D model (JSmol)	Interactive image;
ChemSpider	7091;
ECHA InfoCard	100.002.397
PubChem CID	7369;
UNII	OI9V0QJV9N ;
CompTox Dashboard (EPA)	DTXSID1026619 ;
	InChI InChI=1S/C6H5ClO2S/c7-10(8,9)6-4-2-1-3-5-6/h1-5H Key: CSKNSYBAZOQPLR-UHFFFAOYSA-N; InChI=1/C6H5ClO2S/c7-10(8,9)6-4-2-1-3-5-6/h1-5H Key: CSKNSYBAZOQPLR-UHFFFAOYAR;
	SMILES C1=CC=C(C=C1)S(=O)(=O)Cl;
Properties
Chemical formula	C6H5ClO2S
Molar mass	176.62
Appearance	colourless liquid
Density	1.384 g/mL at 25 °C(lit.)
Melting point	13 to 14 °C (55 to 57 °F; 286 to 287 K)
Solubility in water	reacts
	Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). Infobox references

Benzenesulfonyl chloride is an organosulfur compound with the formula C₆H₅SO₂Cl. It is a colourless viscous oil that dissolves in organic solvents, but reacts with compounds containing reactive N-H and O-H bonds. It is mainly used to prepare sulfonamides and sulfonate esters by reactions with amines and alcohols, respectively. The closely related compound toluenesulfonyl chloride is often preferred analogue because it is a solid at room temperature and easier to handle.