3-Ethoxythiophenol
3-Ethoxythiophenol (CAS: 86704-82-7) is an organosulfur compound with the chemical formula C2H5OC6H4SH and a molecular weight of 154.23 g/mol. This thiol derivative, characterised by its ethoxy group, serves as a valuable intermediate in organic synthesis. It is primarily utilised in chemical research and the development of novel compounds, owing to its reactive thiol functionality which allows for diverse chemical transformations.

Organic Synthesis Intermediate
3-Ethoxythiophenol is employed as a building block in the synthesis of more complex organic molecules. Its thiol group readily participates in reactions such as S-alkylation, S-acylation, and oxidation, making it a versatile reagent.
Research and Development
This compound finds application in academic and industrial research laboratories for exploring new synthetic pathways and developing novel materials. Its specific structure allows for targeted functionalization in drug discovery and materials science projects.
Sulfur Compound Chemistry
As a substituted thiophenol, it is useful in studies involving sulfur-containing organic compounds. It can be used to introduce the 3-ethoxyphenylthio moiety into various chemical structures.
| Molecular weight | 154.23 |
|---|---|
| Linear formula | C2H5OC6H4SH |
| Assay | 97% |
| Boiling point | 238-239 °C(lit.) |
| Density | 1.096 g/mL at 25 °C(lit.) |
| Refractive index | n20/D 1.5706(lit.) |

Hazard statements
- H315Causes skin irritation
- H319Causes serious eye irritation
- H335May cause respiratory irritation
Precautionary statements
- P261Avoid breathing dust, fume, gas or vapours
- P305IF IN EYES
| Protective equipment | Eyeshields, full-face respirator (US), Gloves, multi-purpose combination respirator cartridge (US), type ABEK (EN14387) respirator filter |
|---|---|
| Flash point | 110 °C / 230 °F |
| Transport (UN / ADR) | UN 3334 |
| Water hazard class (WGK, DE) | 3 |
| Hazard codes (EU) | Xi |
| Risk statements (R) | 36/37/38 |
| Safety statements (S) | 26-36 |
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 3-Ethoxythiophenol used for?
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3-Ethoxythiophenol is primarily used as an intermediate in organic synthesis and in chemical research and development for creating novel compounds.
What are the CAS number and chemical formula for 3-Ethoxythiophenol?
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The CAS number for 3-Ethoxythiophenol is 86704-82-7, and its chemical formula is C2H5OC6H4SH.
What grade and purity does Tech Serve Solutions supply?
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Tech Serve Solutions supplies 3-Ethoxythiophenol with an assay of 97%. We do not represent this product as USP, BP, EP, or any other pharmacopoeia grade.
How should 3-Ethoxythiophenol be handled safely?
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3-Ethoxythiophenol is a Warning substance that may cause skin irritation (H315), eye irritation (H319), and respiratory irritation (H335). Ensure adequate ventilation, wear appropriate personal protective equipment including eyeshields and gloves, and use a suitable respirator. Avoid breathing vapours.
Is 3-Ethoxythiophenol available for export?
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Yes, Tech Serve Solutions is a global supplier and exporter of fine chemicals, including 3-Ethoxythiophenol, ensuring compliance with international shipping regulations.
How can I request a quote or sample for 3-Ethoxythiophenol?
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To request a quote or a sample of 3-Ethoxythiophenol, please contact our sales team through the website or by phone, providing your specific requirements and shipping details.
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