Trichloromethanesulfonyl chloride
Trichloromethanesulfonyl chloride (CAS 2547-61-7, Cl3CSO2Cl) is a sulfur compound with a molecular weight of 217.89. It is a reactive organic building block, typically supplied with an assay of 97%. This compound serves as a valuable intermediate in organic synthesis, particularly for introducing the trichloromethanesulfonyl group into various molecules. Its applications are primarily within research and development settings for the creation of novel chemical entities.

Organic Synthesis Intermediate
Trichloromethanesulfonyl chloride is employed as a reagent in organic synthesis to facilitate the formation of new carbon-sulfur and carbon-heteroatom bonds. Its utility lies in the introduction of the Cl3CSO2- moiety into target molecules.
Building Block for Specialty Chemicals
This compound acts as a fundamental building block for the synthesis of more complex molecules. Researchers utilise its reactivity to construct novel structures in the fields of medicinal chemistry and materials science.
Sulfonyl Halide Chemistry
As a sulfonyl halide, it participates in characteristic reactions such as nucleophilic substitution, enabling its use in derivatisation and functionalisation processes.
| Molecular weight | 217.89 |
|---|---|
| Linear formula | Cl3CSO2Cl |
| Assay | 97% |
| Melting point | 137-140 °C(lit.) |


Hazard statements
- H314Causes severe skin burns and eye damage
- H335May cause respiratory irritation
Precautionary statements
- P261Avoid breathing dust, fume, gas or vapours
- P280Wear protective gloves, clothing and eye/face protection
- P305IF IN EYES
- P310Immediately call a POISON CENTER or doctor
| Protective equipment | Eyeshields, Faceshields, full-face particle respirator type N100 (US), Gloves, respirator cartridge type N100 (US), type P1 (EN143) respirator filter, type P3 (EN 143) respirator cartridges |
|---|---|
| Transport (UN / ADR) | UN 3261 8 / PGII |
| Water hazard class (WGK, DE) | 3 |
| Hazard codes (EU) | C |
| Risk statements (R) | 34-36/37 |
| Safety statements (S) | 26-27-28-36/37/39-45 |
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 Trichloromethanesulfonyl chloride used for?
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Trichloromethanesulfonyl chloride is used as an intermediate in organic synthesis and as a building block for creating new chemical compounds.
What is the CAS number and chemical formula for Trichloromethanesulfonyl chloride?
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The CAS number is 2547-61-7 and the chemical formula is Cl3CSO2Cl.
What grade and purity does Tech Serve Solutions supply?
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Tech Serve Solutions supplies Trichloromethanesulfonyl chloride with an assay of 97%. We do not represent this product as USP, BP, or EP grade.
How should Trichloromethanesulfonyl chloride be handled safely?
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Trichloromethanesulfonyl chloride is a Danger hazard (GHS05, GHS07) that causes severe skin burns and eye damage and may cause respiratory irritation (H314-H335). Appropriate personal protective equipment, including eyeshields, face shields, and specific respirator types, must be used. Handle in a well-ventilated area.
How is Trichloromethanesulfonyl chloride packed and exported?
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Trichloromethanesulfonyl chloride is shipped as UN 3261, Class 8, Packing Group II. TSS is a specialist global supplier and exporter of fine chemicals.
How can I request a quote or sample?
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To request a quote or sample of Trichloromethanesulfonyl chloride, please contact our sales team through the website or by phone.
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