Methanethiol
Methanethiol (CAS 74-93-1), with the molecular formula CH3SH and a molecular weight of 48.11 g/mol, is a highly volatile and flammable organosulfur compound. It is a colourless gas with an intensely disagreeable odour, often described as putrid. Methanethiol serves as a crucial intermediate in the synthesis of other chemicals and is used as a precursor in the production of pesticides, herbicides, and pharmaceuticals. Its applications span chemical synthesis and the specialty gases sector.
- IUPAC
- Mercaptan C1,Methyl mercaptan
- Synonyms
- Mercaptan C1Methyl mercaptan
Chemical Synthesis Intermediate
Methanethiol is widely employed as a building block in organic synthesis. It is a precursor for the production of methionine, an essential amino acid, and is used in the manufacture of various pesticides and herbicides.
Specialty Gas
Due to its specific chemical properties, methanethiol is utilised as a specialty gas in certain industrial processes and research applications requiring a volatile sulfur compound.
Precursor for Organic Compounds
It functions as a key reagent in the synthesis of diverse organic compounds, including pharmaceuticals and odourants, where the introduction of a methylthio group is required.
| Molecular weight | 48.11 |
|---|---|
| Linear formula | CH3SH |
| Boiling point | 6 °C(lit.) |
| Vapour pressure | 1536 mmHg (20 °C) |
| Vapour density | 1.66 (vs air) |
| Melting point | −123 °C(lit.) |
Hazard statements
- H220Extremely flammable gas
- H280Contains gas under pressure; may explode if heated
- H331Toxic if inhaled
- H410Very toxic to aquatic life with long-lasting effects
Precautionary statements
- P210Keep away from heat, sparks and open flames. No smoking
- P261Avoid breathing dust, fume, gas or vapours
- P273Avoid release to the environment
- P311Call a POISON CENTER or doctor
- P410Protect from sunlight
- P501Dispose of contents and container per local regulations
| Protective equipment | Eyeshields, Faceshields, full-face respirator (US), Gloves, multi-purpose combination respirator cartridge (US) |
|---|---|
| Flash point | -18 °C / -.4 °F |
| Transport (UN / ADR) | UN 1064 2.1(2.3) |
| Water hazard class (WGK, DE) | 3 |
| Hazard codes (EU) | F+,T,N |
| Risk statements (R) | 12-23-50/53 |
| Safety statements (S) | 16-25-60-61 |
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 Methanethiol used for?
+
Methanethiol is primarily used as an intermediate in chemical synthesis, a precursor for pesticides, herbicides, methionine, and other organic compounds, and as a specialty gas.
What are the CAS number and molecular formula for Methanethiol?
+
The CAS number for Methanethiol is 74-93-1, and its molecular formula is CH3SH.
What grade and purity does Tech Serve Solutions supply?
+
Tech Serve Solutions supplies methanethiol primarily for research and chemical synthesis applications. We offer technical grades, and purity details are available on specific product documentation. TSS does not represent this product as USP, BP, or EP grade.
How should Methanethiol be handled safely?
+
Methanethiol is extremely flammable and toxic by inhalation, and is a severe irritant. Handling requires strict safety protocols, including working in well-ventilated areas, using appropriate personal protective equipment such as full-face respirators and chemical-resistant gloves, and avoiding ignition sources. Refer to the Safety Data Sheet (SDS) for comprehensive guidance.
How is Methanethiol packed and shipped?
+
Methanethiol is typically supplied in specialised cylinders designed for compressed gases, adhering to international regulations for hazardous material transport. TSS ensures compliant packing and export procedures.
How can I request a quote or sample for Methanethiol?
+
To request a quote or sample of Methanethiol, please contact our sales team via the website or provide your details through the product enquiry form.
▶ Related products
1-(2-Fluorobenzyl)piperazine
C11H15FN2
Chemical Synthesis
1-(2-Fluorophenyl)biguanide hydrochloride
Chemical Synthesis
1-(2-Fluorophenyl)cyclopropanecarboxylic acid
C10H9FO2
Chemical Synthesis
1-(2-Fluorophenyl)piperazine
C10H13FN2
Chemical Synthesis
1-(2-Fluorophenyl)piperazine monohydrochloride
C10H13FN2 · HCl
Chemical Synthesis
1-(2-Furoyl)-1H-benzotriazole
C11H7N3O2
Chemical Synthesis
1-(2-Furoyl)piperazine
C9H12N2O2
Chemical Synthesis
1-(2-Hydroxy-5-methylphenyl)-3-phenyl-1,3-propanedione
Chemical Synthesis
▶ Explore more
3-Methyl-1,5-di-p-tolyl-1,4-pentazadiene
Chemical Synthesis
3-Methyl-1,5-pentanediol
Chemical Synthesis
3-Methyl-1-(2-methylphenyl)-1H-pyrazol-5-amine
C11H13N3
Chemical Synthesis
3-Methyl-1-(3′-sulfoamidophenyl)-5-pyrazolone
C10H11N3O3S
Chemical Synthesis