2-Bromobutane
Also known as: sec-Butyl bromide, 2-Butyl bromide, 1-bromo-1-methylpropane, 1-methylpropyl bromide, (±)-2-bromobutane, s-Butyl bromide, Butane, 2-bromo-
2-Bromobutane (CAS 78-76-2) is a compound in the Aliphatic Hydrocarbons category listed in the Jingsj chemical database. It has the molecular formula C4H9Br and a molecular weight of 137.018 g/mol. Key properties include a melting point of -112 °C, a boiling point of 90.7±8.0 °C at 760 mmHg, a density of 1.3±0.1 g/cm3 and a flash point of 21.1±0.0 °C. It is classified under GHS with signal word Danger and hazard statements H225 — Highly flammable liquid and vapour. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 78-76-2
- Jingsj CID
- J-44816-3
- Molecular Formula
- C4H9Br
- Molecular Weight
- 137.018 g/mol
- Category
- Aliphatic Hydrocarbons
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Melting Point | -112 °C |
|---|---|
| Boiling Point | 90.7±8.0 °C at 760 mmHg |
| Density | 1.3±0.1 g/cm3 |
| Flash Point | 21.1±0.0 °C |
| Exact Mass | 135.988754 |
| LogP | 2.56 |
| Vapor Pressure | 62.9±0.2 mmHg at 25°C |
| Refractive Index | 1.436 |
| Additional Property | insoluble |
GHS Safety & Compliance
- H225 — Highly flammable liquid and vapour
Customs & Trade Information
| HS Code | 29033036 |
|---|
Frequently Asked Questions
What is the CAS number of 2-Bromobutane?
The CAS number of 2-Bromobutane is 78-76-2.
What are the molecular formula and molecular weight of 2-Bromobutane?
2-Bromobutane has molecular formula C4H9Br and molecular weight 137.018 g/mol.
Is 2-Bromobutane hazardous?
2-Bromobutane has GHS signal word Danger and hazard statements H225 — Highly flammable liquid and vapour.
What are the upstream and downstream products of 2-Bromobutane?
For 2-Bromobutane, Upstream Products: 2-Chlorobutane, 2-Butanol, 2,3-Dichlorobutane; Downstream Products: (2-Butyl)triphenylphosphonium bromide, (S)-(+)-2-Butanol, (R)-(-)-2-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-Bromobutane (CAS 78-76-2)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-44816-3 (accessed 2026-11-06).
Data for reference only; verify product details with suppliers before purchase.