1-bromobut-3-en-2-one
Also known as: 1-Bromo-3-buten-2-one, 3-Buten-2-one, 1-bromo-, Bromomethyl vinyl ketone, 1-Bromobut-3-en-2-one, 1-bromo-3-butene-2-one
1-bromobut-3-en-2-one (CAS 155622-69-8) is a compound in the Ketones category listed in the Jingsj chemical database. It has the molecular formula C4H5BrO and a molecular weight of 148.986 g/mol. Key properties include a boiling point of 154.5±23.0 °C at 760 mmHg, a density of 1.5±0.1 g/cm3 and a flash point of 78.5±9.9 °C. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 155622-69-8
- Jingsj CID
- J-1524477-6
- Molecular Formula
- C4H5BrO
- Molecular Weight
- 148.986 g/mol
- Category
- Ketones
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Boiling Point | 154.5±23.0 °C at 760 mmHg |
|---|---|
| Density | 1.5±0.1 g/cm3 |
| Flash Point | 78.5±9.9 °C |
| Exact Mass | 147.952377 |
| PSA | 17.07000 |
| LogP | 0.74 |
| Vapor Pressure | 3.2±0.3 mmHg at 25°C |
| Refractive Index | 1.474 |
Frequently Asked Questions
What is the CAS number of 1-bromobut-3-en-2-one?
The CAS number of 1-bromobut-3-en-2-one is 155622-69-8.
What are the molecular formula and molecular weight of 1-bromobut-3-en-2-one?
1-bromobut-3-en-2-one has molecular formula C4H5BrO and molecular weight 148.986 g/mol.
What are the upstream and downstream products of 1-bromobut-3-en-2-one?
For 1-bromobut-3-en-2-one, Downstream Products: 1-Benzyl-3-pyrrolidinone, 1-Benzyl-3-pyrrolidinol.
Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "1-bromobut-3-en-2-one (CAS 155622-69-8)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1524477-6 (accessed 2026-11-09).
Data for reference only; verify product details with suppliers before purchase.