p-Terphenyl-4,4′′-dithiol
p-Terphenyl-4,4′′-dithiol (CAS: 174706-21-9) is a valuable organic building block with the linear formula HSC₆H₄C₆H₄C₆H₄SH and a molecular weight of 294.43 g/mol. This dithiol is primarily employed in materials science and micro/nanoelectronics for its self-assembly properties and utility in creating advanced organic structures. Its structure makes it suitable for applications in organic synthesis and the development of self-assembly materials.
- IUPAC
- 1,4-Bis(4-mercaptophenyl)benzene,TPDT
- Synonyms
- 1,4-Bis(4-mercaptophenyl)benzeneTPDT

Materials Science
Utilised in the development of novel materials owing to its unique molecular structure and thiol functionalities, enabling precise surface modification and film formation.
Micro/Nanoelectronics
Serves as a key component in the fabrication of electronic devices, particularly in self-assembled monolayers (SAMs) for surface functionalisation and creating conductive pathways.
Organic Synthesis
Acts as a versatile building block in organic chemistry for the synthesis of complex molecules, polymers, and functional materials.
Self-Assembly Materials
Essential for creating ordered molecular assemblies on surfaces, facilitating applications in nanotechnology and sensor development.
| Molecular weight | 294.43 |
|---|---|
| Linear formula | HSC6H4C6H4C6H4SH |
| Assay | 96% |
| Storage temperature | −20°C |
| Melting point | 294-299 °C |


Hazard statements
- H302Harmful if swallowed
- 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 | dust mask type N95 (US), Eyeshields, Gloves |
|---|---|
| Transport (UN / ADR) | UN 3077 9 / PGIII |
| Water hazard class (WGK, DE) | 3 |
| Hazard codes (EU) | Xn,N |
| Risk statements (R) | 22-50/53 |
| Safety statements (S) | 60-61 |
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 p-Terphenyl-4,4′′-dithiol used for?
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p-Terphenyl-4,4′′-dithiol is used in materials science, micro/nanoelectronics, organic synthesis, and for developing self-assembly materials.
What is the CAS number and formula for p-Terphenyl-4,4′′-dithiol?
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The CAS number is 174706-21-9, and the linear formula is HSC₆H₄C₆H₄C₆H₄SH.
What grade and purity does Tech Serve Solutions supply?
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Tech Serve Solutions supplies p-Terphenyl-4,4′′-dithiol with an assay of 96%. This is a research-grade chemical and not intended for USP, BP, EP, or other pharmacopoeia applications.
How should p-Terphenyl-4,4′′-dithiol be handled?
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Handle p-Terphenyl-4,4′′-dithiol with appropriate personal protective equipment, including a dust mask (type N95 or equivalent), eyeshields, and gloves. Avoid release to the environment, as it is hazardous to aquatic life with long-lasting effects. Store at -20°C.
Is p-Terphenyl-4,4′′-dithiol shipped internationally?
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Yes, Tech Serve Solutions is a global supplier and exporter of chemicals, including p-Terphenyl-4,4′′-dithiol, adhering to all relevant shipping regulations.
How can I request a sample or quote for p-Terphenyl-4,4′′-dithiol?
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To request a sample or a quote for p-Terphenyl-4,4′′-dithiol, please contact the Tech Serve Solutions sales team via the website or direct inquiry channels.
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