2-Methyl-2-propanethiol
2-Methyl-2-propanethiol (CAS 75-66-1), molecular formula (CH3)3CSH, is a high-purity chemical supplied by Tech Serve Solutions for chemical synthesis applications, to pharmacopoeia specification (USP, BP, EP). Every batch is tested and ships with a Certificate of Analysis; MSDS and technical data sheets are available on request. Tech Serve Solutions has supplied laboratory reagents, fine chemicals and pharmaceutical intermediates worldwide since 1998.
- IUPAC
- tert-Butyl mercaptan,TBM

| Molecular weight | 90.19 |
|---|---|
| Linear formula | (CH3)3CSH |
| Assay | 99% |
| Boiling point | 62-65 °C(lit.) |
| Density | 0.8 g/mL at 25 °C(lit.) |
| Refractive index | n20/D 1.423(lit.) |
| Solubility | H2O: slightly solublealcohol: very solublediethyl ether: very soluble |
| Melting point | -0.5 °C(lit.) |
| Vapour pressure | 303.5 mmHg (37.7 °C) |
| Vapour density | 3.1 (vs air) |
| Application | 2-Methyl-2-propanethiol was used in reaction of 2-methyl-2-propanethiol on Mo(110) using temperature programmed reaction, high resolution electron enegy loss and X-ray photoelectron spectroscopies1. It was used in the synthesis of chain-transfer agents for reversible addition-fragmentation chain-transfer copolymerization of vinylidene chloride and methyl acrylate2. |



Hazard statements
- H225Highly flammable liquid and vapour
- H317May cause an allergic skin reaction
- H411Toxic to aquatic life with long-lasting effects
Precautionary statements
- P210Keep away from heat, sparks and open flames. No smoking
- P273Avoid release to the environment
- P280Wear protective gloves, clothing and eye/face protection
| Protective equipment | Eyeshields, Faceshields, full-face respirator (US), Gloves, multi-purpose combination respirator cartridge (US) |
|---|---|
| Flash point | -25 °C / -13 °F |
| Transport (UN / ADR) | UN 2347 3 / PGII |
| Water hazard class (WGK, DE) | 3 |
| Hazard codes (EU) | F,Xn,N |
| Risk statements (R) | 11-43-51/53 |
| Safety statements (S) | 36/37-61 |
Hazard information is provided for guidance. Always consult the product Safety Data Sheet (SDS), available on request, before handling.
Documentation
Supplied to USP, BP and EP standards. Every batch ships with a Certificate of Analysis (assay, identity, purity); MSDS 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-Methyl-2-propanethiol?
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2-Methyl-2-propanethiol (CAS 75-66-1), molecular formula (CH3)3CSH, is a high-purity chemical supplied by Tech Serve Solutions for chemical synthesis applications, to USP, BP and EP standards.
What grades of 2-Methyl-2-propanethiol does Tech Serve Solutions supply?
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Tech Serve Solutions supplies 2-Methyl-2-propanethiol in USP, BP, EP and reagent/AR grades. Custom specifications for nutraceutical or specialty pharmaceutical applications are available — contact our technical sales team.
What is the CAS number and molecular formula of 2-Methyl-2-propanethiol?
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2-Methyl-2-propanethiol has CAS number 75-66-1 and molecular formula (CH3)3CSH. Full specifications appear in the table above and in the Certificate of Analysis.
What is the typical minimum order quantity and lead time for 2-Methyl-2-propanethiol?
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Sample quantities are available for technical evaluation; bulk MOQ depends on grade and packaging. In-stock material typically ships in 7–10 working days; custom-spec orders take 3–4 weeks. Tech Serve Solutions ships worldwide with full export documentation.
Do you provide a Certificate of Analysis (CoA) with each shipment?
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Yes. Every batch of 2-Methyl-2-propanethiol ships with a Certificate of Analysis covering assay, identity and purity tests, plus pharmacopoeia conformance where applicable. MSDS and TDS documents are available on request before order placement.
How should 2-Methyl-2-propanethiol be stored?
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Store 2-Methyl-2-propanethiol in its original sealed container in a cool, dry place away from direct sunlight and incompatible materials, in line with the storage guidance on the Safety Data Sheet. Reseal between dispensings.
What is 2-Methyl-2-propanethiol used for?
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2-Methyl-2-propanethiol is used in chemical synthesis applications across pharmaceutical, research and industrial settings. Our technical team can advise on suitability for your specific process.
How do I request a quote for 2-Methyl-2-propanethiol?
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Request a quote with your required grade, quantity and destination via https://www.techservesolutions.in/contact or email info@techservesolutions.in. We respond with specifications, a Certificate of Analysis and pricing.
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