2-Chloroethyl methanesulfonate
2-Chloroethyl methanesulfonate (CAS: 3570-58-9), with the chemical formula CH3SO3CH2CH2Cl, is a versatile organic compound. Possessing a molecular weight of 158.60 g/mol, it serves as a valuable building block in organic synthesis. Its structure incorporates a sulfonate ester and an alkyl chloride, facilitating various chemical transformations, particularly in the development of novel chemical entities and intermediates.

Organic Synthesis Intermediate
2-Chloroethyl methanesulfonate is employed as a key intermediate in the synthesis of more complex organic molecules. Its reactive chloroethyl group and methanesulfonate moiety allow for versatile derivatization in multi-step synthetic pathways.
Alkylation Agent
This compound can function as an alkylating agent, introducing the 2-(methylsulfonyloxy)ethyl group into various nucleophiles. This is useful in the construction of specific functionalised molecules.
Research and Development
It finds application in research laboratories for the exploration of new chemical reactions and the development of novel compounds across diverse fields, including materials science and medicinal chemistry.
| Molecular weight | 158.60 |
|---|---|
| Linear formula | CH3SO3CH2CH2Cl |
| Assay | ≥99% |
| Boiling point | 125-126 °C/9 mmHg(lit.) |
| Density | 1.39 g/mL at 25 °C(lit.) |
| Refractive index | n20/D 1.456(lit.) |


Hazard statements
- H302Harmful if swallowed
- H312Harmful in contact with skin
- H332Harmful if inhaled
- H351Suspected of causing cancer
Precautionary statements
- P280Wear protective gloves, clothing and eye/face protection
| Protective equipment | Eyeshields, Faceshields, full-face respirator (US), Gloves, multi-purpose combination respirator cartridge (US), type ABEK (EN14387) respirator filter |
|---|---|
| Flash point | 113 °C / 235.4 °F |
| Transport (UN / ADR) | UN 2810 6.1 / PGIII |
| Water hazard class (WGK, DE) | 3 |
| Hazard codes (EU) | Xn |
| Risk statements (R) | 20/21/22-40 |
| Safety statements (S) | 23-36/37/39-45 |
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-Chloroethyl methanesulfonate used for?
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2-Chloroethyl methanesulfonate (CAS: 3570-58-9) is primarily used as a versatile intermediate in organic synthesis and as an alkylation agent in chemical research and development.
What is the CAS number and chemical formula for 2-Chloroethyl methanesulfonate?
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The CAS number is 3570-58-9, and the chemical formula is CH3SO3CH2CH2Cl.
What grade and purity does Tech Serve Solutions supply?
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Tech Serve Solutions supplies 2-Chloroethyl methanesulfonate with an assay of ≥99%. This is a technical grade, and TSS does not represent it as USP, BP, or EP grade.
How should 2-Chloroethyl methanesulfonate be handled safely?
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Handle with care, wearing appropriate personal protective equipment including eyeshields, faceshields, and gloves. Ensure adequate ventilation and use a suitable respirator. This compound is harmful if swallowed, in contact with skin, or if inhaled, and is suspected of causing cancer.
How is 2-Chloroethyl methanesulfonate packed and shipped?
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2-Chloroethyl methanesulfonate is packed and shipped in compliance with UN 2810, 6.1 / PGIII regulations, suitable for global export.
How can I request a quote or sample for 2-Chloroethyl methanesulfonate?
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To request a quote or sample, please contact the Tech Serve Solutions sales team through our website or by phone, providing your specific requirements.
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