2-Pentyn-1-ol

Also known as: pent-2-yn-1-ol, 2-PENTYNE-1-OL, 2-Pentynol, 2-Pentynyl alcohol

2-Pentyn-1-ol (CAS 6261-22-9) 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 melting point of -0.2ºC, a boiling point of 149.1±0.0 °C at 760 mmHg, a density of 0.9±0.1 g/cm3 and a flash point of 58.3±0.0 °C. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.: 6261-22-9
Jingsj CID: J-18743-9
Molecular Formula: C₅H₈O
Molecular Weight: 84.116 g/mol
Category: Alcohols
Last updated: 8/21/2026

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Physicochemical Properties

Melting Point	-0.2ºC
Boiling Point	149.1±0.0 °C at 760 mmHg
Density	0.9±0.1 g/cm3
Flash Point	58.3±0.0 °C
Exact Mass	84.057518
PSA	20.23000
LogP	0.66
Vapor Pressure	1.6±0.5 mmHg at 25°C
Refractive Index	1.451

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 2-Pentyn-1-ol?

The CAS number of 2-Pentyn-1-ol is 6261-22-9.

What are the molecular formula and molecular weight of 2-Pentyn-1-ol?

2-Pentyn-1-ol has molecular formula C5H8O and molecular weight 84.116 g/mol.

What are the upstream and downstream products of 2-Pentyn-1-ol?

For 2-Pentyn-1-ol, Upstream Products: Formaldehyde, 1-butyne, n-Butyllithium; Downstream Products: (2E,6Z)-2,6-Nonadienal, cis-2-Penten-1-ol, 1-Pentanol.

Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.

Last updated: 8/21/2026

How to cite: Jingsj. "2-Pentyn-1-ol (CAS 6261-22-9)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-18743-9 (accessed 2026-11-09).

Data for reference only; verify product details with suppliers before purchase.