Chlorosulfonyl isocyanate

Chlorosulfonyl isocyanate
Chlorosulfonyl isocyanate
Chlorosulfonyl isocyanate
Names
IUPAC name
Chlorosulfonyl isocyanate
Other names
N-Carbonylsulfamyl chloride
Chloropyrosulfonyl isocyanate
Sulfuryl chloride isocyanate
Identifiers
3D model (JSmol)
ChemSpider
ECHA InfoCard 100.013.378 Edit this at Wikidata
EC Number
  • 214-715-2
UNII
  • InChI=1S/CClNO3S/c2-7(5,6)3-1-4 checkY
    Key: WRJWRGBVPUUDLA-UHFFFAOYSA-N checkY
  • InChI=1/CClNO3S/c2-7(5,6)3-1-4
    Key: WRJWRGBVPUUDLA-UHFFFAOYAX
  • ClS(=O)(=O)N=C=O
Properties
CNClO3S
Molar mass 141.53 g/mol
Appearance colorless liquid
Density 1.626 g/cm3
Melting point −44 °C (−47 °F; 229 K)
Boiling point 107 °C (225 °F; 380 K)
decomposition
Solubility in other solvents Chlorocarbons
MeCN
1.447
Structure
tetrahedral at S
Hazards
Occupational safety and health (OHS/OSH):
Main hazards
 toxic, corrosive, flammable,
reacts violently with water
GHS labelling:
GHS05: CorrosiveGHS06: ToxicGHS07: Exclamation markGHS08: Health hazard
Danger
H302, H312, H314, H330, H332, H334
P260, P261, P264, P270, P271, P280, P284, P285, P301+P312, P301+P330+P331, P302+P352, P303+P361+P353, P304+P312, P304+P340, P304+P341, P305+P351+P338, P310, P312, P320, P321, P322, P330, P342+P311, P363, P403+P233, P405, P501
NFPA 704 (fire diamond)
NFPA 704 four-colored diamondHealth 3: Short exposure could cause serious temporary or residual injury. E.g. chlorine gasFlammability 1: Must be pre-heated before ignition can occur. Flash point over 93 °C (200 °F). E.g. canola oilInstability 2: Undergoes violent chemical change at elevated temperatures and pressures, reacts violently with water, or may form explosive mixtures with water. E.g. white phosphorusSpecial hazard W: Reacts with water in an unusual or dangerous manner. E.g. sodium, sulfuric acid
3
1
2
W
Safety data sheet (SDS) "External MSDS"
Related compounds
Related compounds
 Thionyl chloride
Cyanogen bromide
Phosphoryl chloride
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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Chlorosulfonyl isocyanate is the chemical compound ClSO2NCO, known as CSI. This compound is a versatile reagent in organic synthesis.