Organic intermediate

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Chlorosulfonyl Isocyanate CAS 1189-71-5

Synthesis of agrochemicals, polymers, etc....

CAS : 1189-71-5

Molecular : CClNO3S

EINECS : 141.53

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Detailed introduction

1. Product Overview

Product Name: Chlorosulfonyl Isocyanate

Synonyms:N-Carbonylsulfamylchloride,CSI;N-(Oxomethylidene)sulfamoylchloride;N-Chlorosulphonylisocyanate;Chlorosulfonylisocyanate,99%;ChlorosulChemicalbookfonylisocyanate,N-Carbonylsulfamylchloride,CSI;Chlorosulfonylisocy;Chlorosulfonylisocyanate,98+%50ML;Chlorosulfonylisocyanate,98+%5ML

CAS Number: 1189-71-5

EC Number: 214-715-2

Molecular Formula: CClNO3S

Molecular Weight:141.53

2. Physical & Chemical Properties

Appearance	Colorless transparent liquid
Assay	30.0 – 32.0% (or 38.0 – 42.0% for high‑concentration grade)
Melting point	-44 °C (lit.)
Boiling point	107 °C (lit.)
Density	1.626 g/mL at 25 °C (lit.)
Vapor pressure	5.57 psi ( 20 °C)
Refractive index	n20/D 1.447(lit.)
Flash point	>110°C
Specific gravity	1.626 (20℃)