octadecyne
Also known as: 1-Octadecyne, 1-octadecyne, CETYLACETYLENE, EINECS 211-114-7, Hexadecylacetylen, Hexadecylacetylene, MFCD00015088, N-HEXADECYLACETYLENE, n-octadecyne, octadec-1-in, octadec-1-yne, octadecan-1-yne
octadecyne (CAS 629-89-0) is a compound in the Aliphatic Hydrocarbons category listed in the Jingsj chemical database. It has the molecular formula C18H34 and a molecular weight of 250.463 g/mol. Key properties include a melting point of 22,5°C, a boiling point of 313.5±5.0 °C at 760 mmHg, a density of 0.8±0.1 g/cm3 and a flash point of 148.5±2.0 °C. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 629-89-0
- Jingsj CID
- J-15327-8
- Molecular Formula
- C18H34
- Molecular Weight
- 250.463 g/mol
- Category
- Aliphatic Hydrocarbons
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Melting Point | 22,5°C |
|---|---|
| Boiling Point | 313.5±5.0 °C at 760 mmHg |
| Density | 0.8±0.1 g/cm3 |
| Flash Point | 148.5±2.0 °C |
| Exact Mass | 250.266052 |
| LogP | 8.97 |
| Vapor Pressure | 0.0±0.3 mmHg at 25°C |
| Refractive Index | 1.451 |
Frequently Asked Questions
What is the CAS number of octadecyne?
The CAS number of octadecyne is 629-89-0.
What are the molecular formula and molecular weight of octadecyne?
octadecyne has molecular formula C18H34 and molecular weight 250.463 g/mol.
What are the upstream and downstream products of octadecyne?
For octadecyne, Upstream Products: Sodium acetylide, 1-Bromohexadecane, Acetylene; Downstream Products: n-Octadecane, Octadec-1-ene, 1-Tetracosanol.
Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "octadecyne (CAS 629-89-0)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-15327-8 (accessed 2026-11-07).
Data for reference only; verify product details with suppliers before purchase.