Toluene-3,4-dithiol
Toluene-3,4-dithiol (CAS 496-74-2) is an organic sulfur compound with the linear formula CH3C6H3(SH)2. This dithiol features two thiol (-SH) groups on a toluene backbone, making it a valuable building block in organic synthesis. It is primarily utilised in chemical synthesis and research due to its reactive thiol functionalities, enabling its incorporation into more complex molecular structures.
- IUPAC
- ‘Dithiol’,3,4-Dimercaptotoluene,4-Methyl-1,2-benzenedithiol
- Synonyms
- CH3C6H3(SH)24-Methyl-1,2-benzenedithiol3,4-Dimercaptotoluene

Organic Synthesis Intermediate
Toluene-3,4-dithiol serves as a key intermediate in the synthesis of various organic compounds. Its dithiol nature allows for diverse reactions, including cyclisations and the formation of sulphur-containing heterocycles.
Building Block for Complex Molecules
This compound acts as a versatile building block for constructing complex molecular architectures in pharmaceutical and materials science research. The presence of two thiol groups offers multiple points for chemical modification.
Reagent in Chemical Research
It is employed as a reagent in academic and industrial research laboratories for exploring novel chemical transformations and developing new synthetic methodologies.
| Molecular weight | 156.27 |
|---|---|
| Linear formula | CH3C6H3(SH)2 |
| Assay | 90% |
| Boiling point | 135-137 °C/17 mmHg(lit.) |
| Density | 1.179 g/mL at 25 °C(lit.) |
| Melting point | 30-33 °C(lit.) |
Precautionary statements
- P261Avoid breathing dust, fume, gas or vapours
- P280Wear protective gloves, clothing and eye/face protection
- P305IF IN EYES
| Flash point | 113 °C / 235 °F |
|---|---|
| Water hazard class (WGK, DE) | 3 |
| Hazard codes (EU) | Xn |
| Risk statements (R) | 22-37/38-41 |
| Safety statements (S) | 26-36/37/39 |
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 Toluene-3,4-dithiol used for?
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Toluene-3,4-dithiol is used as a building block and intermediate in organic synthesis, particularly for creating sulphur-containing compounds and complex molecular structures in research.
What is the CAS number and formula for Toluene-3,4-dithiol?
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The CAS number is 496-74-2, and its linear formula is CH3C6H3(SH)2.
What grade and purity does Tech Serve Solutions supply?
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Tech Serve Solutions supplies Toluene-3,4-dithiol with an assay of 90%. We do not represent this product as USP, BP, or EP grade.
What are the safety and handling precautions for Toluene-3,4-dithiol?
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Toluene-3,4-dithiol is harmful if swallowed and causes skin and eye irritation. It may also cause respiratory irritation. Handle with appropriate personal protective equipment (gloves, safety glasses, respirator) in a well-ventilated area. Refer to the Safety Data Sheet for full details.
How is Toluene-3,4-dithiol packed, shipped, and exported?
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Toluene-3,4-dithiol is carefully packed according to international shipping regulations to ensure safe transit. Tech Serve Solutions has extensive experience in exporting chemicals globally.
How can I request a sample or quote for Toluene-3,4-dithiol?
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Please contact our sales team via the website or email to request a sample or a detailed quotation for Toluene-3,4-dithiol.
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