1-Propanethiol
Also known as: n-Propyl mercaptan, Propyl mercaptan, n-Propanethiol, Propylthiol, 1-Mercaptopropane, 1-Propylthiol, Propan-1-thiol, Mercaptan C3, FEMA 3521
1-Propanethiol (CAS 107-03-9) is a compound in the Alcohols category listed in the Jingsj chemical database. It has the molecular formula C3H8S and a molecular weight of 76.161 g/mol. Key properties include a melting point of -113 °C, a boiling point of 67.8±3.0 °C at 760 mmHg, a density of 0.8±0.1 g/cm3 and a flash point of -20.6±0.0 °C. It is classified under GHS with signal word Danger and hazard statements H225 — Highly flammable liquid and vapour, H302 — Harmful if swallowed and H315 — Causes skin irritation. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 107-03-9
- Jingsj CID
- J-44002-0
- Molecular Formula
- C3H8S
- Molecular Weight
- 76.161 g/mol
- Category
- Alcohols
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Melting Point | -113 °C |
|---|---|
| Boiling Point | 67.8±3.0 °C at 760 mmHg |
| Density | 0.8±0.1 g/cm3 |
| Flash Point | -20.6±0.0 °C |
| Exact Mass | 76.034668 |
| PSA | 38.80000 |
| LogP | 1.78 |
| Additional Property | 2.54 (vs air) |
| Vapor Pressure | 155.6±0.1 mmHg at 25°C |
| Refractive Index | 1.431 |
| Additional Property | immiscible |
GHS Safety & Compliance
- H225 — Highly flammable liquid and vapour
- H302 — Harmful if swallowed
- H315 — Causes skin irritation
- H318 — Causes serious eye damage
- H335 — May cause respiratory irritation
Customs & Trade Information
| HS Code | 2930909090 |
|---|---|
| Summary | 2930909090. other organo-sulphur compounds. VAT:17.0%. Tax rebate rate:13.0%. . MFN tariff:6.5%. General tariff:30.0% |
Frequently Asked Questions
What is the CAS number of 1-Propanethiol?
The CAS number of 1-Propanethiol is 107-03-9.
What are the molecular formula and molecular weight of 1-Propanethiol?
1-Propanethiol has molecular formula C3H8S and molecular weight 76.161 g/mol.
Is 1-Propanethiol hazardous?
1-Propanethiol has GHS signal word Danger and hazard statements H225 — Highly flammable liquid and vapour; H302 — Harmful if swallowed; H315 — Causes skin 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. "1-Propanethiol (CAS 107-03-9)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-44002-0 (accessed 2026-11-07).
Data for reference only; verify product details with suppliers before purchase.