2-Chlorobenzenesulfonyl isocyanate
2-Chlorobenzenesulfonyl isocyanate (CAS 64900-65-8), with the molecular formula ClC6H4SO2NCO and a molecular weight of 217.63 g/mol, is a reactive organic compound. This isocyanate is a valuable building block in organic synthesis. It is primarily utilised as an intermediate in the preparation of various chemical compounds, particularly in research and development settings for novel molecule discovery and material science applications.

Organic Synthesis Intermediate
This compound serves as a key intermediate in the synthesis of complex organic molecules. Its reactive isocyanate group allows for facile derivatization, enabling the construction of diverse chemical structures for research purposes.
Pharmaceutical Research
It can be employed in the early stages of drug discovery and development as a building block for potential therapeutic agents. Its structure lends itself to the introduction of specific functional groups into candidate molecules.
Material Science
The reactivity of 2-Chlorobenzenesulfonyl isocyanate may be leveraged in the development of new materials. It can be used to modify polymers or create novel functional materials with tailored properties.
| Molecular weight | 217.63 |
|---|---|
| Linear formula | ClC6H4SO2NCO |
| Assay | 90% |
| Boiling point | 285 °C(lit.) |
| Density | 1.484 g/mL at 25 °C(lit.) |
| Refractive index | n20/D 1.559(lit.) |
| Impurities tested | 10% 2-chlorobenzenesulfonyl chloride |

Hazard statements
- H314Causes severe skin burns and eye damage
Precautionary statements
- P280Wear protective gloves, clothing and eye/face protection
- P305IF IN EYES
- P310Immediately call a POISON CENTER or doctor
| Protective equipment | Faceshields, full-face respirator (US), Gloves, Goggles, multi-purpose combination respirator cartridge (US), type ABEK (EN14387) respirator filter |
|---|---|
| Flash point | 113 °C / 235.4 °F |
| Transport (UN / ADR) | UN 3265 8 / PGI |
| Water hazard class (WGK, DE) | 3 |
| Hazard codes (EU) | C |
| Risk statements (R) | 34 |
| Safety statements (S) | 26-36/37/39-45 |
Hazard information is provided for guidance. Always consult the product Safety Data Sheet (SDS), available on request, before handling.
Documentation
Every batch ships with a Certificate of Analysis covering assay, identity and purity; the grade is confirmed against your enquiry. Safety Data Sheets and technical data sheets are available on request.
Supply & logistics
Samples for technical evaluation; bulk MOQ by grade and packaging. In-stock material ships in 7–10 working days, worldwide, with full export documentation.
What is 2-Chlorobenzenesulfonyl isocyanate used for?
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2-Chlorobenzenesulfonyl isocyanate is primarily used as a building block and intermediate in organic synthesis, particularly in pharmaceutical research and material science.
What is the CAS number and molecular formula?
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The CAS number is 64900-65-8, and the molecular formula is ClC6H4SO2NCO.
What grade and purity does Tech Serve Solutions supply?
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Tech Serve Solutions supplies 2-Chlorobenzenesulfonyl isocyanate with an assay of 90%. This is a technical grade material and TSS does not represent it as USP, BP, or EP grade.
How should 2-Chlorobenzenesulfonyl isocyanate be handled safely?
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Due to its corrosive nature (H314), this chemical requires careful handling. Use appropriate personal protective equipment, including faceshields, gloves, goggles, and a suitable respirator. Work in a well-ventilated area and avoid contact with skin and eyes. Refer to the safety data sheet for detailed instructions.
Is 2-Chlorobenzenesulfonyl isocyanate a controlled substance?
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The provided data does not indicate that 2-Chlorobenzenesulfonyl isocyanate is a controlled substance.
How is this product packed, shipped, and exported?
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This product is packed and shipped in compliance with relevant regulations for hazardous materials. Tech Serve Solutions is experienced in global exporting.
How can I request a sample or quote?
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To request a sample or a quote for 2-Chlorobenzenesulfonyl isocyanate, please contact our sales team through the website or by phone.
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