Molekula
Chlorosulfonyl isocyanate
Chlorosulfonyl isocyanate is a highly reactive organic compound used in the synthesis of isocyanates, sulfonamides, and other specialty chemicals. It is a corrosive, moisture-sensitive reagent requiring careful handling. CAS: 1189-71-5, Molecular Formula: ClSO₂NCO, Molecular Weight: 141.53 g/mol. Store at 2 to 8 °C. Signal word: Danger. Molekula supplies Chlorosulfonyl isocyanate from research to bulk quantities with full documentation and ISO 9001:2015 traceability.
Overview
Chlorosulfonyl isocyanate is a highly reactive organic compound used in the synthesis of isocyanates, sulfonamides, and other specialty chemicals. It is a corrosive, moisture-sensitive reagent requiring careful handling. CAS: 1189-71-5, Molecular Formula: ClSO₂NCO, Molecular Weight: 141.53 g/mol. Store at 2 to 8 °C. Signal word: Danger. Molekula supplies Chlorosulfonyl isocyanate from research to bulk quantities with full documentation and ISO 9001:2015 traceability.
Specifications
| Property | Value |
|---|---|
| Appearance | Colourless or light yellow transparent liquid |
| Assay | >99% |
| Impurities | <1.0% |
Storage & handling
| Property | Value |
|---|---|
| Storage Temperature | 2 to 8 °C |
| Flash Point | 110 C |
| Transport Class | 8 |
| Packing Group | II |
| Shelf Life | 24 months |
| Acidity | Acid |
Identification
| Property | Value |
|---|---|
| CAS Number | 1189-71-5 |
| Molecular Formula | ClSO2NCO |
| Molecular Weight | 141.53 |
| SMILES | C(=NS(=O)(=O)Cl)=O |
| EC / UN Number | 3265 |
| REACH Code | Y110 |
| TSCA Listed | Yes |
| HTS Code | 28429090 |
| Tariff Code | 2842908080 |
Safety & GHS
-
Explosive
GHS01
-
Flammable
GHS02
-
Compressed Gas
GHS04
Hazard statements
- EUH014 Reacts violently with water
- H302 Harmful if swallowed
- H314 (sub cat. 1B) Causes severe skin burns and eye damage
- H334 May cause allergy or asthma symptoms or breathing difficulties if inhaled
Precautionary statements
- P223 Keep away from any possible contact with water, because of violent reaction and possible flash fire
- P260 Do not breathe dust/fume/gas/mist/vapours/spray
- P280 Wear protective gloves/protective clothing/eye protection/face protection
- P301+310 IF SWALLOWED: Immediately call a POISON CENTER or doctor/physician
- P305+351+338 IF IN EYES: Rinse with water for several minutes. Remove contact lenses if present and easy to do. Continue rinsing
For research and industrial use only
Documents
Certificate of Analysis (CoA) by batch
Enter a lot or batch number to retrieve the CoA for that specific batch. We can generate one from spec data if no PDF is on file.
Pricing & pack sizes
Synonyms
No alternate names recorded for this product.
Frequently asked questions
What is chlorosulfonyl isocyanate used for?
It is primarily used in organic synthesis for introducing isocyanate and sulfonyl groups, particularly in the production of pharmaceuticals and agrochemicals.
What is the chemical formula and molecular weight?
The formula is ClSO2NCO with a molecular weight of 141.53 g/mol.
How should chlorosulfonyl isocyanate be stored?
It must be stored at temperatures between 2 to 8 °C and protected from light and moisture.
What grade is available?
Molekula supplies chlorosulfonyl isocyanate in high-purity laboratory grade.
Can Molekula supply it in bulk?
Yes, bulk quantities are available upon request; please contact our sales team for details.
What documentation comes with the order?
Each order includes a Certificate of Analysis (CoA) and Safety Data Sheet (SDS) with the shipment.
Ready to order or need a custom pack?
Tell us the product, grade, and quantity — Molekula usually responds within one working day with pricing and lead time.