3-Methylbenzenethiol
3-Methylbenzenethiol (CAS: 108-40-7, Formula: C7H8S, MW: 124.20) is an organosulfur compound recognised for its thiol functionality attached to a toluene ring. This chemical is a valuable building block in organic synthesis and chemical research. It is typically supplied at an assay of 95% and serves as a key intermediate in the development of various chemical products.
- IUPAC
- m-Thiocresol

Organic Synthesis Intermediate
3-Methylbenzenethiol is employed as a versatile intermediate in the synthesis of more complex organic molecules. Its reactive thiol group allows for diverse chemical transformations.
Chemical Research
This compound finds use in research laboratories for exploring new synthetic pathways and developing novel compounds. Its specific structural features make it a useful reagent for various studies.
Building Block for Specialty Chemicals
As an organic building block, 3-Methylbenzenethiol contributes to the creation of specialty chemicals, particularly those incorporating sulfur moieties. Its applications span across various chemical manufacturing sectors.
| Molecular weight | 124.20 |
|---|---|
| Linear formula | CH3C6H4SH |
| Assay | 95% |
| Boiling point | 196 °C(lit.) |
| Density | 1.044 g/mL at 25 °C(lit.) |
| Refractive index | n20/D 1.5762(lit.) |



Hazard statements
- H315Causes skin irritation
- H318Causes serious eye damage
- H335May cause respiratory irritation
- H400Very toxic to aquatic life
Precautionary statements
- P261Avoid breathing dust, fume, gas or vapours
- P273Avoid release to the environment
- P280Wear protective gloves, clothing and eye/face protection
- P305IF IN EYES
| Protective equipment | Eyeshields, full-face respirator (US), Gloves, multi-purpose combination respirator cartridge (US), type ABEK (EN14387) respirator filter |
|---|---|
| Flash point | 73 °C / 163.4 °F |
| Transport (UN / ADR) | UN 3334 |
| Water hazard class (WGK, DE) | 3 |
| Hazard codes (EU) | Xi |
| Risk statements (R) | 37/38-41 |
| Safety statements (S) | 26-39 |
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 3-Methylbenzenethiol used for?
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3-Methylbenzenethiol (CAS: 108-40-7) is primarily used as a building block in organic synthesis and for chemical research, facilitating the creation of complex organic molecules and specialty chemicals.
What are the CAS number and molecular formula for 3-Methylbenzenethiol?
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The CAS number for 3-Methylbenzenethiol is 108-40-7, and its molecular formula is C7H8S (or CH3C6H4SH).
What grade and purity does Tech Serve Solutions supply for 3-Methylbenzenethiol?
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Tech Serve Solutions supplies 3-Methylbenzenethiol with an assay of 95%. This product is not represented as USP, BP, EP, or any other pharmacopoeia grade.
How should 3-Methylbenzenethiol be handled safely?
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3-Methylbenzenethiol is a Danger hazard. It causes skin irritation (H315), serious eye damage (H318), and may cause respiratory irritation (H335). It is also very toxic to aquatic life (H400). Always use appropriate personal protective equipment, including eyeshields, gloves, and a suitable respirator, and ensure adequate ventilation. Avoid release to the environment.
How is 3-Methylbenzenethiol packed, shipped, and exported?
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3-Methylbenzenethiol is handled according to international shipping regulations for hazardous materials. TSS exports chemicals globally, ensuring compliance with all necessary documentation and transport protocols.
How can I request a quote or sample of 3-Methylbenzenethiol?
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To request a quote or a sample of 3-Methylbenzenethiol, please contact the Tech Serve Solutions sales team via our website or direct inquiry channels.
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