butanethiol
Also known as: 1-Butanethiol, Butyl Mercaptan, n-Butyl mercaptan, Butane-1-thiol, n-Butanethiol, n-Butyl thioalcohol, Thiobutyl alcohol, 1-Mercaptobutane, Mercaptan C4, n-Butylmercaptan
butanethiol (CAS 109-79-5) is a compound in the Alcohols category listed in the Jingsj chemical database. It has the molecular formula C4H10S and a molecular weight of 90.187 g/mol. Key properties include a melting point of −116 °C(lit.), a boiling point of 98.2±3.0 °C at 760 mmHg, a density of 0.8±0.1 g/cm3 and a flash point of 12.8±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 H332 — Harmful if inhaled. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 109-79-5
- Jingsj CID
- J-48606-4
- Molecular Formula
- C4H10S
- Molecular Weight
- 90.187 g/mol
- Category
- Alcohols
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Melting Point | −116 °C(lit.) |
|---|---|
| Boiling Point | 98.2±3.0 °C at 760 mmHg |
| Density | 0.8±0.1 g/cm3 |
| Flash Point | 12.8±0.0 °C |
| Exact Mass | 90.050323 |
| PSA | 38.80000 |
| LogP | 2.31 |
| Additional Property | 3.1 (vs air) |
| Vapor Pressure | 46.3±0.2 mmHg at 25°C |
| Refractive Index | 1.437 |
| Additional Property | 0.60 g/100 mL. Slightly soluble |
GHS Safety & Compliance
- H225 — Highly flammable liquid and vapour
- H302 — Harmful if swallowed
- H332 — Harmful if inhaled
- H315 — Causes skin irritation
- H317 — May cause an allergic skin reaction
- H319 — Causes serious eye irritation
- 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 butanethiol?
The CAS number of butanethiol is 109-79-5.
What are the molecular formula and molecular weight of butanethiol?
butanethiol has molecular formula C4H10S and molecular weight 90.187 g/mol.
Is butanethiol hazardous?
butanethiol has GHS signal word Danger and hazard statements H225 — Highly flammable liquid and vapour; H302 — Harmful if swallowed; H332 — Harmful if inhaled.
What are the upstream and downstream products of butanethiol?
For butanethiol, Upstream Products: 1-Iodobutane, 1-Butanol, Dibutyl disulfide; Downstream Products: 2-(Butylthio)ethanol, Dibutyl disulfide, Dibutyl sulfide.
Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "butanethiol (CAS 109-79-5)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-48606-4 (accessed 2026-11-06).
Data for reference only; verify product details with suppliers before purchase.