2-Butyn-1-ol
Also known as: but-2-yn-1-ol, 2-butyne-1-ol, 2-butynol, 2-butynyl alcohol, 1-hydroxy-2-butyne, 1-hydroxybut-2-yne, methyl propargyl alcohol, CH3C≡CCH2OH
2-Butyn-1-ol (CAS 764-01-2) is a compound in the Alcohols category listed in the Jingsj chemical database. It has the molecular formula C4H6O and a molecular weight of 70.090 g/mol. Key properties include a melting point of −2.2 °C(lit.), a boiling point of 148.0±8.0 °C at 760 mmHg, a density of 0.9±0.1 g/cm3 and a flash point of 51.7±0.0 °C. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 764-01-2
- Jingsj CID
- J-47933-4
- Molecular Formula
- C4H6O
- Molecular Weight
- 70.090 g/mol
- Category
- Alcohols
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Melting Point | −2.2 °C(lit.) |
|---|---|
| Boiling Point | 148.0±8.0 °C at 760 mmHg |
| Density | 0.9±0.1 g/cm3 |
| Flash Point | 51.7±0.0 °C |
| Exact Mass | 70.041862 |
| PSA | 20.23000 |
| LogP | 0.13 |
| Vapor Pressure | 1.7±0.6 mmHg at 25°C |
| Refractive Index | 1.447 |
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-Butyn-1-ol?
The CAS number of 2-Butyn-1-ol is 764-01-2.
What are the molecular formula and molecular weight of 2-Butyn-1-ol?
2-Butyn-1-ol has molecular formula C4H6O and molecular weight 70.090 g/mol.
What are the upstream and downstream products of 2-Butyn-1-ol?
For 2-Butyn-1-ol, Upstream Products: iodomethane, Formaldehyde, 1-propynylmagnesium bromide; Downstream Products: 1-Bromo-2-butyne, (Z)-2-Buten-1-ol, 1-Butanol.
Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "2-Butyn-1-ol (CAS 764-01-2)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-47933-4 (accessed 2026-11-09).
Data for reference only; verify product details with suppliers before purchase.