Chlorosulfonyl isocyanate
Pharmaceutical Materials 2025-03-02
CAS Number: 1189-71-5
Molecular Formula: CClNO3S
Molecular Weight: 141.53 g/mol
Appearance: Colorless or nearly colorless transparent liquid
Usage: Widely used in the synthesis of antibiotics, agrochemicals, polymers, etc.
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| Attribute | Details |
|---|---|
| Chemical Name | Chlorosulfonyl isocyanate |
| CAS Number | 1189-71-5 |
| EINECS Number | 214-715-2 |
| Molecular Formula | CClNO3S |
| Molecular Weight | 141.5336 g/mol |
| Synonyms | Chlorosulfonyl isocyanate (CSI); N-Carbonylsulfamyl chloride; Sulfuryl chloride isocyanate; Sulfonyl chloride isocyanate; Chlorosulphonyl isocyanate |
| Appearance | Colorless to transparent liquid |
| Density | 1.626 g/mL at 25°C (lit.) (some sources indicate 1.77 g/cm3) |
| Melting Point | -44°C (lit.) |
| Boiling Point | 107°C at 760 mmHg (lit.) |
| Flash Point | Varies, but one source lists >110°C |
| Refractive Index | n20/D 1.447 (lit.) |
| Vapor Pressure | 32.2 mmHg at 25°C (or 5.57 psi at 20°C) |
| Solubility | Reacts violently with water, exothermic |
| Safety | S23: Do not breathe vapor. Handle with caution due to potential hazards. |
| Chemical Properties | Reacts with various compounds, such as alkenes, alkynes, alcohols, aldehydes, ketones, carboxylic acids, amines, and alkanes, to form various products. |
| Applications | Used as an organic synthesis reagent. |
