tert-Dodecylmercaptan
Tert-Dodecylmercaptan (CAS: 25103-58-6, Formula: C12H25SH) is a sulfur-containing organic compound with a molecular weight of 202.40 g/mol. This thiol, also known as tert-dodecanethiol, is primarily utilized as a chain transfer agent in polymerization processes and as an intermediate in the synthesis of other chemical compounds. Its specific properties make it valuable in various industrial chemical applications.
- IUPAC
- tert-Dodecanethiol
- Synonyms
- tert-Dodecanethiol

Chain Transfer Agent in Polymerization
Tert-Dodecylmercaptan acts as an effective chain transfer agent in free-radical polymerization. It helps control the molecular weight of polymers, ensuring consistent material properties for specific applications.
Chemical Synthesis Intermediate
The compound serves as a versatile building block in organic synthesis. It can be used to introduce the dodecylmercaptan moiety into larger molecules, facilitating the creation of specialty chemicals and functional materials.
Sulfur Compound Precursor
As a thiol, it can be a precursor for synthesizing various sulfur-containing organic compounds. These may find use in diverse areas ranging from materials science to specialised chemical formulations.
| Molecular weight | 202.40 |
|---|---|
| Linear formula | C12H25SH |
| Assay | ≥97.0% (RT) |
| Boiling point | 227-248 °C(lit.) |
| Density | 0.86 g/mL at 20 °C(lit.) |


Hazard statements
- H315Causes skin irritation
- H319Causes serious eye irritation
- H410Very toxic to aquatic life with long-lasting effects
Precautionary statements
- P273Avoid release to the environment
- P305IF IN EYES
- P501Dispose of contents and container per local regulations
| Protective equipment | Eyeshields, full-face respirator (US), Gloves, multi-purpose combination respirator cartridge (US), type ABEK (EN14387) respirator filter |
|---|---|
| Flash point | 97 °C / 206.6 °F |
| Transport (UN / ADR) | UN 3082 9/PG 3 |
| Water hazard class (WGK, DE) | 3 |
| Hazard codes (EU) | Xi,N |
| Risk statements (R) | 36/38-50/53 |
| Safety statements (S) | 26-36-60 |
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 Tert-Dodecylmercaptan used for?
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Tert-Dodecylmercaptan (CAS: 25103-58-6) is primarily used as a chain transfer agent in polymerization processes and as an intermediate in chemical synthesis. It helps control polymer molecular weight and is a building block for other sulfur-containing compounds.
What are the CAS number and formula for Tert-Dodecylmercaptan?
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The CAS number for Tert-Dodecylmercaptan is 25103-58-6, and its chemical formula is C12H25SH.
What grade and purity does Tech Serve Solutions supply?
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Tech Serve Solutions supplies Tert-Dodecylmercaptan with an assay of ≥97.0% (RT). This product is intended for research and industrial use. TSS does not represent it as USP, EP, BP, or pharmacopoeia grade.
How should Tert-Dodecylmercaptan be handled safely?
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Tert-Dodecylmercaptan is a warning substance that causes skin and serious eye irritation (H315, H319) and is toxic to aquatic life with long-lasting effects (H410). Appropriate personal protective equipment, including eyeshields and gloves, must be worn. Handle in a well-ventilated area and avoid release to the environment.
How is Tert-Dodecylmercaptan packaged and shipped?
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Tert-Dodecylmercaptan is shipped as a hazardous material (UN 3082, Class 9). Packaging adheres to strict international regulations for dangerous goods to ensure safe transit and export.
How can I request a sample or quote for Tert-Dodecylmercaptan?
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To request a sample or a quote for Tert-Dodecylmercaptan, please contact the TSS sales team through our website or by phone. Provide your specific requirements for prompt attention.
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