4-Toluenesulfonyl chloride

4-Toluenesulfonyl chloride
Names
	Preferred IUPAC name 4-Methylbenzene-1-sulfonyl chloride
	Other names Tosyl chloride, p-toluenesulfonyl chloride, p-TsCl, TsCl
Identifiers
CAS Number	98-59-9 ;
3D model (JSmol)	Interactive image;
ChemSpider	7119 ;
ECHA InfoCard	100.002.441
PubChem CID	7397;
UNII	027KYN78B4 ;
CompTox Dashboard (EPA)	DTXSID1052660 ;
	InChI InChI=1S/C7H7ClO2S/c1-6-2-4-7(5-3-6)11(8,9)10/h2-5H,1H3 Key: YYROPELSRYBVMQ-UHFFFAOYSA-N ; InChI=1/C7H7ClO2S/c1-6-2-4-7(5-3-6)11(8,9)10/h2-5H,1H3 Key: YYROPELSRYBVMQ-UHFFFAOYAN;
	SMILES O=S(Cl)(=O)c1ccc(cc1)C;
Properties
Chemical formula	C7H7ClO2S
Molar mass	190.65 g/mol
Appearance	White solid
Melting point	65 to 69 °C (149 to 156 °F; 338 to 342 K)
Boiling point	134 °C (273 °F; 407 K) at 10 mmHg
Solubility in water	Reacts with water
Hazards
	Occupational safety and health (OHS/OSH):
Main hazards	Releases HCl on contact with water
NFPA 704 (fire diamond)	3 1 0
Flash point	128 °C (262 °F; 401 K)
	Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). verify (what is ?) Infobox references

4-Toluenesulfonyl chloride (p-toluenesulfonyl chloride, toluene-p-sulfonyl chloride) is an organic compound with the formula CH₃C₆H₄SO₂Cl. This white, malodorous solid is a reagent widely used in organic synthesis. Abbreviated TsCl or TosCl, it is a derivative of toluene and contains a sulfonyl chloride (−SO₂Cl) functional group.