1-Octadecanethiol
Also known as: Octadecanethiol, n-Octadecyl mercaptan, Octadecyl mercaptan, Stearyl mercaptan, Octadecane-1-thiol, Mercaptan C18, ODM
1-Octadecanethiol (CAS 2885-00-9) is a compound in the Alcohols category listed in the Jingsj chemical database. It has the molecular formula C18H38S and a molecular weight of 286.559 g/mol. Key properties include a melting point of 30-33 °C(lit.), a boiling point of 360.5±5.0 °C at 760 mmHg, a density of 0.8±0.1 g/cm3 and a flash point of 185.0±0.0 °C. It is classified under GHS with signal word Warning and hazard statements H315 — Causes skin irritation, H319 — Causes serious eye irritation and H335 — May cause respiratory irritation. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 2885-00-9
- Jingsj CID
- J-32536-9
- Molecular Formula
- C18H38S
- Molecular Weight
- 286.559 g/mol
- Category
- Alcohols
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Melting Point | 30-33 °C(lit.) |
|---|---|
| Boiling Point | 360.5±5.0 °C at 760 mmHg |
| Density | 0.8±0.1 g/cm3 |
| Flash Point | 185.0±0.0 °C |
| Exact Mass | 286.269409 |
| PSA | 38.80000 |
| LogP | 9.75 |
| Vapor Pressure | 0.0±0.8 mmHg at 25°C |
| Refractive Index | 1.462 |
| Additional Property | Insoluble |
GHS Safety & Compliance
- H315 — Causes skin irritation
- 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 1-Octadecanethiol?
The CAS number of 1-Octadecanethiol is 2885-00-9.
What are the molecular formula and molecular weight of 1-Octadecanethiol?
1-Octadecanethiol has molecular formula C18H38S and molecular weight 286.559 g/mol.
Is 1-Octadecanethiol hazardous?
1-Octadecanethiol has GHS signal word Warning and hazard statements H315 — Causes skin irritation; H319 — Causes serious eye irritation; H335 — May cause respiratory irritation.
What are the upstream and downstream products of 1-Octadecanethiol?
For 1-Octadecanethiol, Upstream Products: 1-Octadecanol, 1-Bromooctadecane, oleic acid; Downstream Products: 1-Chlorooctadecane, Dioctadecyl disulfide, 2-[4,5-dihydroxy-2-(hydroxymethyl)-6-(2-octadecylsulfanylethoxy)oxan-3-yl]oxy-6-(hydroxymethyl)oxane-3,4,5-triol.
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-Octadecanethiol (CAS 2885-00-9)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-32536-9 (accessed 2026-11-07).
Data for reference only; verify product details with suppliers before purchase.