1-Pentyn-3-ol
Also known as: Ethyl ethynyl carbinol, Pent-1-yn-3-ol, Pentynol, 1-pentyne-3-ol, 4-pentyn-3-ol, (3S)-1-pentyn-3-ol, 1-pentynyl-3-ol, ethynyl-ethyl carbinol
1-Pentyn-3-ol (CAS 4187-86-4) is a compound in the Alcohols category listed in the Jingsj chemical database. It has the molecular formula C5H8O and a molecular weight of 84.116 g/mol. Key properties include a boiling point of 126.9±8.0 °C at 760 mmHg, a density of 0.9±0.1 g/cm3 and a flash point of 29.4±0.0 °C. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 4187-86-4
- Jingsj CID
- J-47316-5
- Molecular Formula
- C5H8O
- Molecular Weight
- 84.116 g/mol
- Category
- Alcohols
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Boiling Point | 126.9±8.0 °C at 760 mmHg |
|---|---|
| Density | 0.9±0.1 g/cm3 |
| Flash Point | 29.4±0.0 °C |
| Exact Mass | 84.057518 |
| PSA | 20.23000 |
| LogP | 0.50 |
| Additional Property | 1 (vs air) |
| Vapor Pressure | 5.2±0.5 mmHg at 25°C |
| Refractive Index | 1.442 |
Customs & Trade Information
| HS Code | 2905290000 |
|---|---|
| Summary | 2905290000 unsaturated monohydric alcohols。Supervision conditions:None。VAT:17.0%。Tax rebate rate:9.0%。MFN tariff:5.5%。General tariff:30.0% |
Frequently Asked Questions
What is the CAS number of 1-Pentyn-3-ol?
The CAS number of 1-Pentyn-3-ol is 4187-86-4.
What are the molecular formula and molecular weight of 1-Pentyn-3-ol?
1-Pentyn-3-ol has molecular formula C5H8O and molecular weight 84.116 g/mol.
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-Pentyn-3-ol (CAS 4187-86-4)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-47316-5 (accessed 2026-11-09).
Data for reference only; verify product details with suppliers before purchase.