2-Mercaptobenzyl alcohol
2-Mercaptobenzyl alcohol (CAS 4521-31-7), with the molecular formula HSC6H4CH2OH and a molar mass of 140.20 g/mol, is a valuable organic building block. This thiol-containing aromatic alcohol is primarily utilised in chemical synthesis as an intermediate for the creation of more complex molecules. Its reactive functional groups make it a versatile reagent in organic chemistry research and development.

Chemical Synthesis Intermediate
2-Mercaptobenzyl alcohol serves as a key intermediate in the synthesis of various organic compounds. Its thiol and alcohol functionalities allow for diverse chemical transformations, making it useful in constructing complex molecular architectures.
Organic Building Block
As an organic building block, this compound is employed in research laboratories for the development of novel materials and pharmaceuticals. Its unique structure facilitates its incorporation into larger molecular frameworks.
Sulfur Compound Synthesis
The presence of a mercapto group makes it a useful precursor for synthesising a range of sulfur-containing organic molecules. These can find applications in areas such as materials science and medicinal chemistry.
| Molecular weight | 140.20 |
|---|---|
| Linear formula | HSC6H4CH2OH |
| Density | 1.21 g/mL at 25 °C(lit.) |
| Refractive index | n20/D 1.612(lit.) |
| Storage temperature | 2-8°C |
| Melting point | 31-32 °C(lit.) |

Hazard statements
- H318Causes serious eye damage
Precautionary statements
- P280Wear protective gloves, clothing and eye/face protection
- P305IF IN EYES
| Protective equipment | dust mask type N95 (US), Eyeshields, Gloves |
|---|---|
| Flash point | 113 °C / 235.4 °F |
| Transport (UN / ADR) | UN 3335 |
| Water hazard class (WGK, DE) | 3 |
| Hazard codes (EU) | Xi |
| Risk statements (R) | 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 2-Mercaptobenzyl alcohol used for?
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2-Mercaptobenzyl alcohol is primarily used as an intermediate in chemical synthesis and as an organic building block for creating more complex molecules, particularly those containing sulfur.
What is the CAS number and molecular formula for 2-Mercaptobenzyl alcohol?
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The CAS number is 4521-31-7 and the molecular formula is HSC6H4CH2OH.
What grade and purity does Tech Serve Solutions supply?
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Tech Serve Solutions supplies 2-Mercaptobenzyl alcohol typically for research and technical applications. The specific assay and grade available will be detailed in the product's Certificate of Analysis. We do not represent this product as USP, BP, or EP grade unless explicitly stated.
How should 2-Mercaptobenzyl alcohol be handled safely?
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2-Mercaptobenzyl alcohol is classified as 'Danger' (GHS05) and may cause serious eye damage (H318). Appropriate personal protective equipment, including eyeshields, gloves, and a dust mask (N95), is required. Handle in a well-ventilated area, following all safety guidelines provided in the Safety Data Sheet (SDS).
How is 2-Mercaptobenzyl alcohol packed and shipped?
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2-Mercaptobenzyl alcohol is carefully packed to ensure safe transit and is available for global export by Tech Serve Solutions. Storage at 2-8°C is recommended.
How can I request a quote or sample for 2-Mercaptobenzyl alcohol?
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To request a quote or a sample of 2-Mercaptobenzyl alcohol, please use the contact form on our website or contact our sales team directly. Please reference the product name and CAS number (4521-31-7) in your request.
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