4-Pentyn-2-ol
Also known as: (±)-4-Pentyn-2-ol, 1-Methyl-3-butyn-1-ol, 1-Methyl-3-butynyl alcohol, 1-Pentyn-4-ol, 4-Hydroxy-1-pentyne, 4-Pentyne-2-ol, Pent-4-yn-2-ol, rac-4-Pentyn-2-ol, B5447322HJ, MFCD00004555
4-Pentyn-2-ol (CAS 2117-11-5) 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 126.5±0.0 °C at 760 mmHg, a density of 0.9±0.1 g/cm3 and a flash point of 37.2±0.0 °C. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 2117-11-5
- Jingsj CID
- J-26949-8
- 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 | 126.5±0.0 °C at 760 mmHg |
|---|---|
| Density | 0.9±0.1 g/cm3 |
| Flash Point | 37.2±0.0 °C |
| Exact Mass | 84.057518 |
| PSA | 20.23000 |
| LogP | 0.34 |
| Vapor Pressure | 5.4±0.4 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 4-Pentyn-2-ol?
The CAS number of 4-Pentyn-2-ol is 2117-11-5.
What are the molecular formula and molecular weight of 4-Pentyn-2-ol?
4-Pentyn-2-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. "4-Pentyn-2-ol (CAS 2117-11-5)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-26949-8 (accessed 2026-11-10).
Data for reference only; verify product details with suppliers before purchase.