Hexa(ethylene glycol) dithiol
Hexa(ethylene glycol) dithiol (CAS: 89141-22-0) is a chemical compound with the formula C12H26O5S2 and a molecular weight of 314.46 g/mol. This homobifunctional PEG derivative features terminal thiol groups, making it valuable in polymer science and materials chemistry. It serves as a key crosslinking agent and is utilised in micro/nanoelectronics and self-assembly applications. Tech Serve Solutions supplies this reagent with a purity of >97%.
- IUPAC
- 3,6,9,12,15-Pentaoxaheptadecane-1,17-dithiol,Tetraethylene glycol di(ethanediol)

Crosslinking Agent
The terminal thiol groups of Hexa(ethylene glycol) dithiol enable it to act as an effective crosslinker in polymer networks. This is crucial for modifying material properties like elasticity and strength.
Materials Science
Its structure, derived from polyethylene glycol, allows for incorporation into advanced materials. It is particularly useful in the development of self-assembling monolayers and functionalised surfaces for micro/nanoelectronic applications.
Polymer Science
Hexa(ethylene glycol) dithiol is a valuable monomer or modifying agent in polymer synthesis. It facilitates the creation of novel polymers with tailored characteristics, particularly those requiring flexible, hydrophilic chains and reactive end groups.
| Molecular weight | 314.46 |
|---|---|
| Empirical formula | C12H26O5S2 |
| Assay | >97% |
| Density | 1.113 g/mL at 25 °C |
| Refractive index | n20/D 1.495 |
| Storage temperature | 2-8°C |

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
| 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 |
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 Hexa(ethylene glycol) dithiol used for?
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Hexa(ethylene glycol) dithiol is primarily used as a crosslinking agent in polymer science and materials science. Its applications extend to micro/nanoelectronics and self-assembly processes.
What is the CAS number and formula for Hexa(ethylene glycol) dithiol?
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The CAS number for Hexa(ethylene glycol) dithiol is 89141-22-0, and its empirical formula is C12H26O5S2.
What grade and purity does Tech Serve Solutions supply?
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Tech Serve Solutions supplies Hexa(ethylene glycol) dithiol with an assay of >97%. This product is supplied for research and laboratory use and is not represented as USP, BP, EP, or other pharmacopoeia grades.
How should Hexa(ethylene glycol) dithiol be handled and stored?
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Hexa(ethylene glycol) dithiol is classified as a Warning with hazards including skin irritation (H315), serious eye irritation (H319), and respiratory irritation (H335). It should be handled with appropriate personal protective equipment in a well-ventilated area. Recommended storage is between 2-8°C.
How is Hexa(ethylene glycol) dithiol packed, shipped, and exported?
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Hexa(ethylene glycol) dithiol is carefully packed to ensure safe transit and is available for export globally by Tech Serve Solutions, a specialist supplier since 1998.
How can I request a sample or quote for Hexa(ethylene glycol) dithiol?
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To request a sample or a quote for Hexa(ethylene glycol) dithiol, please contact our sales team via the website or direct email, referencing the product name and CAS number 89141-22-0.
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