3-Butyn-1-ol
Also known as: But-3-yn-1-ol, Homopropargyl alcohol, 4-Hydroxy-1-butyne, 1-Butyn-4-ol, 2-Hydroxyethylacetylene, 3-Butynol, 3-Butynyl alcohol, β-Ethynylethanol, Homopropargylic alcohol
3-Butyn-1-ol (CAS 927-74-2) is a compound in the Alcohols category listed in the Jingsj chemical database. It has the molecular formula C4H6O and a molecular weight of 70.09 g/mol. Key properties include a melting point of −63.6 °C(lit.), a boiling point of 130.1±13.0 °C at 760 mmHg, a density of 0.9±0.1 g/cm3 and a flash point of 36.1±0.0 °C. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 927-74-2
- Jingsj CID
- J-49167-8
- Molecular Formula
- C4H6O
- Molecular Weight
- 70.09 g/mol
- Category
- Alcohols
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Melting Point | −63.6 °C(lit.) |
|---|---|
| Boiling Point | 130.1±13.0 °C at 760 mmHg |
| Density | 0.9±0.1 g/cm3 |
| Flash Point | 36.1±0.0 °C |
| Exact Mass | 70.041862 |
| PSA | 20.23000 |
| LogP | -0.01 |
| Vapor Pressure | 4.4±0.5 mmHg at 25°C |
| Refractive Index | 1.439 |
Activity & Biological Data
| Target | Human Endogenous Metabolite |
|---|
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 3-Butyn-1-ol?
The CAS number of 3-Butyn-1-ol is 927-74-2.
What are the molecular formula and molecular weight of 3-Butyn-1-ol?
3-Butyn-1-ol has molecular formula C4H6O and molecular weight 70.09 g/mol.
What are the upstream and downstream products of 3-Butyn-1-ol?
For 3-Butyn-1-ol, Upstream Products: 2-(But-3-yn-1-yloxy)tetrahydro-2H-pyran, 4-(tert-Butyldimethylsilyloxy)-1-butyne, Formaldehyde; Downstream Products: Methyl 4-(4-oxobutyl)benzoate, 4-(tert-Butyldimethylsilyloxy)-1-butyne, 4-Bromo-1-butyne.
Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "3-Butyn-1-ol (CAS 927-74-2)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-49167-8 (accessed 2026-11-09).
Data for reference only; verify product details with suppliers before purchase.