2-Propanethiol
Also known as: isopropyl mercaptan, propane-2-thiol, isopropanethiol, isopropylthiol, 2-propylmercaptan, 2-mercaptopropane, FEMA 3897, IPM(TM), Propanethiol-(2), i-propyl mercaptan, iso-C3H7SH, mercaptanisopropylique
2-Propanethiol (CAS 75-33-2) is a compound in the Alcohols category listed in the Jingsj chemical database. It has the molecular formula C3H8S and a molecular weight of 76.16060 g/mol. Key properties include a melting point of −131 °C(lit.), a boiling point of 57-60 °C(lit.), a density of 0.82 g/mL at 25 °C(lit.) and a flash point of <-34.4 °C. It is classified under GHS with signal word Danger and hazard statements H225 — Highly flammable liquid and vapour, H315 — Causes skin irritation and H319 — Causes serious eye irritation. No supplier offers are currently listed; request a quote. Record last updated Nov 3, 2026.
- CAS No.
- 75-33-2
- Jingsj CID
- J-26106-3
- Molecular Formula
- C3H8S
- Molecular Weight
- 76.16060 g/mol
- Category
- Alcohols
- Last updated
- 11/3/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Melting Point | −131 °C(lit.) |
|---|---|
| Boiling Point | 57-60 °C(lit.) |
| Density | 0.82 g/mL at 25 °C(lit.) |
| Flash Point | <-34.4 °C |
| Exact Mass | 76.03470 |
| PSA | 38.80000 |
| LogP | 1.32460 |
| Additional Property | 2.6 (vs air) |
| Vapor Pressure | 455 mm Hg ( 37.8 °C) |
| Refractive Index | n20/D 1.426(lit.) |
GHS Safety & Compliance
- H225 — Highly flammable liquid and vapour
- H315 — Causes skin irritation
- H319 — Causes serious eye irritation
- H335 — May cause respiratory irritation
Frequently Asked Questions
What is the CAS number of 2-Propanethiol?
The CAS number of 2-Propanethiol is 75-33-2.
What are the molecular formula and molecular weight of 2-Propanethiol?
2-Propanethiol has molecular formula C3H8S and molecular weight 76.16060 g/mol.
Is 2-Propanethiol hazardous?
2-Propanethiol has GHS signal word Danger and hazard statements H225 — Highly flammable liquid and vapour; H315 — Causes skin irritation; H319 — Causes serious eye irritation.
Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "2-Propanethiol (CAS 75-33-2)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-26106-3 (accessed 2026-11-09).
Data for reference only; verify product details with suppliers before purchase.