S-Ethyl chlorothioformate
S-Ethyl chlorothioformate (CAS: 2941-64-2) is a sulfur-containing organic building block with the molecular formula ClCOSC2H5 and a molecular weight of 124.59 g/mol. This chemical is primarily utilised in organic synthesis as a reagent for introducing the ethoxythiocarbonyl group. Its notable reactivity makes it a valuable intermediate in the preparation of various chemical compounds. Tech Serve Solutions supplies this compound with an assay of 96%.
- IUPAC
- (Ethylthio)carbonyl chloride
- Synonyms
- (Ethylthio)carbonyl chloride

Organic Synthesis Reagent
S-Ethyl chlorothioformate serves as a key reagent in organic synthesis for the introduction of the ethoxythiocarbonyl moiety. This is crucial for building more complex molecular structures in research and development settings.
Intermediate in Chemical Manufacturing
It functions as an intermediate in the production of various chemical compounds, leveraging its reactive chlorine and thioester functional groups. This application is prevalent in the fine chemical and pharmaceutical sectors.
Building Block for Sulfur Compounds
As a sulfur-containing compound, it is employed as a building block for creating diverse sulfur-based organic molecules. These molecules can have applications in materials science and medicinal chemistry.
| Molecular weight | 124.59 |
|---|---|
| Linear formula | ClCOSC2H5 |
| Assay | 96% |
| Boiling point | 132 °C(lit.) |
| Density | 1.195 g/mL at 25 °C(lit.) |
| Refractive index | n20/D 1.482(lit.) |
| Vapour pressure | 0.2 psi (20 °C) |



Hazard statements
- H226Flammable liquid and vapour
- H302Harmful if swallowed
- H312Harmful in contact with skin
- H314Causes severe skin burns and eye damage
- H330Fatal if inhaled
- H335May cause respiratory irritation
Precautionary statements
- P260Do not breathe dust, fume, gas, mist, vapours or spray
- P280Wear protective gloves, clothing and eye/face protection
- P284Wear respiratory 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 | 31 °C / 87.8 °F |
| Transport (UN / ADR) | UN 2826 3(8) |
| Water hazard class (WGK, DE) | 3 |
| Hazard codes (EU) | C |
| Risk statements (R) | 10-20/21/22-34-36/37 |
| Safety statements (S) | 16-26-27-36/37/39-45 |
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 S-Ethyl chlorothioformate used for?
+
S-Ethyl chlorothioformate is primarily used as a reagent in organic synthesis for introducing the ethoxythiocarbonyl group and as an intermediate in the preparation of various chemical compounds, particularly those containing sulfur.
What is the CAS number and formula for S-Ethyl chlorothioformate?
+
The CAS number for S-Ethyl chlorothioformate is 2941-64-2 and its linear formula is ClCOSC2H5.
What grade and purity does Tech Serve Solutions supply?
+
Tech Serve Solutions supplies S-Ethyl chlorothioformate with an assay of 96%. We do not represent this product as USP, BP, or EP grade.
How should S-Ethyl chlorothioformate be handled safely?
+
S-Ethyl chlorothioformate is a dangerous substance. It is flammable and corrosive, causing severe skin burns and eye damage. It is toxic if inhaled, swallowed or in contact with skin. Handle with extreme care, using appropriate personal protective equipment including gloves, eye protection, and a suitable respirator, in a well-ventilated area. Consult the Safety Data Sheet for full details.
How is S-Ethyl chlorothioformate packed, shipped, and exported?
+
S-Ethyl chlorothioformate is carefully packed according to international transport regulations. Tech Serve Solutions is experienced in exporting chemicals globally, ensuring compliance with all necessary documentation and shipping standards.
How can I request a quote or sample for S-Ethyl chlorothioformate?
+
To request a quote or a sample of S-Ethyl chlorothioformate, please contact our sales team through the website or by phone. We will be happy to assist you with your inquiry.
▶ Related products

1-(2-Fluorobenzyl)piperazine
C11H15FN2
Chemical Synthesis
1-(2-Fluorophenyl)biguanide hydrochloride
Chemical Synthesis

1-(2-Fluorophenyl)cyclopropanecarboxylic acid
C10H9FO2
Chemical Synthesis
1-(2-Fluorophenyl)piperazine
C10H13FN2
Chemical Synthesis
1-(2-Fluorophenyl)piperazine monohydrochloride
C10H13FN2 · HCl
Chemical Synthesis
1-(2-Furoyl)-1H-benzotriazole
C11H7N3O2
Chemical Synthesis
1-(2-Furoyl)piperazine
C9H12N2O2
Chemical Synthesis
1-(2-Hydroxy-5-methylphenyl)-3-phenyl-1,3-propanedione
Chemical Synthesis
▶ Explore more

3-Methyl-1,5-di-p-tolyl-1,4-pentazadiene
Chemical Synthesis

3-Methyl-1,5-pentanediol
Chemical Synthesis

3-Methyl-1-(2-methylphenyl)-1H-pyrazol-5-amine
C11H13N3
Chemical Synthesis
3-Methyl-1-(3′-sulfoamidophenyl)-5-pyrazolone
C10H11N3O3S
Chemical Synthesis