4-Pentyn-1-ol
Also known as: pent-4-yn-1-ol, 1-pentyn-5-ol, 1-Pentyne-5-ol, 4-Pentyne-1-ol, 4-Pentynyl alcohol, 5-hydroxypentyne, 5-carbon acetylenic alcohol
4-Pentyn-1-ol (CAS 5390-04-5) 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 154.0±0.0 °C at 760 mmHg, a density of 0.9±0.1 g/cm3 and a flash point of 61.7±0.0 °C. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 5390-04-5
- Jingsj CID
- J-1383188-4
- 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 | 154.0±0.0 °C at 760 mmHg |
|---|---|
| Density | 0.9±0.1 g/cm3 |
| Flash Point | 61.7±0.0 °C |
| Exact Mass | 84.057518 |
| PSA | 20.23000 |
| LogP | 0.35 |
| Vapor Pressure | 1.2±0.6 mmHg at 25°C |
| Refractive Index | 1.445 |
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 4-Pentyn-1-ol?
The CAS number of 4-Pentyn-1-ol is 5390-04-5.
What are the molecular formula and molecular weight of 4-Pentyn-1-ol?
4-Pentyn-1-ol has molecular formula C5H8O and molecular weight 84.116 g/mol.
What are the upstream and downstream products of 4-Pentyn-1-ol?
For 4-Pentyn-1-ol, Upstream Products: Tetrahydrofurfuryl chloride, 2-(4-Pentynyloxy)tetrahydro-2H-pyran, 4-Pentynoic acid; Downstream Products: 2-(2-Propyn-1-yloxy)ethanol, 5-Bromo-2-pentanone, 16-Hydroxyhexadecanoic acid.
Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "4-Pentyn-1-ol (CAS 5390-04-5)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1383188-4 (accessed 2026-11-09).
Data for reference only; verify product details with suppliers before purchase.