2-Sulfobenzoic anhydride

About This Item

Molecular Formula	C₇H₄O₄S
CAS Number	81-08-3

FC-0345175

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Properties

Chemical Identifiers

IUPAC Name	1,1-dioxo-2,1λ6-benzoxathiol-3-one
SMILES	C1=CC=C2C(=C1)C(=O)OS2(=O)=O
InChI Key	NCYNKWQXFADUOZ-UHFFFAOYSA-N
InChI	InChI=1S/C7H4O4S/c8-7-5-3-1-2-4-6(5)12(9,10)11-7/h1-4H

Physical Properties

Boiling Point	314.7±0.0 °C at 760 mmHg
Melting Point	129.5 °C
Flash Point	140.6±19.3 °C
Density	1.6±0.1 g/cm3

Safety Information

Hazard Class

Danger

Flash Point

140.6±19.3 °C

Please refer to the Safety Data Sheet (SDS) for complete handling, storage, and disposal instructions. Follow all applicable regulations when working with this chemical reagent.