1-Bromo-2-pentene, predominantly trans

1-溴-2-戊烯

Also known as: (E)-1-bromo-2-pentene, (E)-1-bromopent-2-ene, 1-bromo-trans-2-pentene, trans-1-bromo-2-pentene, trans-1-bromo-pent-2-ene, 2-Pentene, 1-bromo-, (2E)-, E-1-Bromo-2-pentene, pent-2-enyl bromide, 1-BROMO-2-PENTENE 95% PREDOMINANTLY, 1-bromo-2-pentene,predominantlytrans

1-Bromo-2-pentene, predominantly trans (CAS 7348-71-2) is a compound in the Aliphatic Hydrocarbons category listed in the Jingsj chemical database. It has the molecular formula C5H9Br and a molecular weight of 149.02900 g/mol. It is also known as (E)-1-bromo-2-pentene, (E)-1-bromopent-2-ene and 1-bromo-trans-2-pentene. Key properties include a melting point of -106.7°C (estimate), a boiling point of 122ºC(lit.), a density of 1.26 g/mL at 25ºC(lit.) and a flash point of 73 °F. GHS signal word: Danger. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
7348-71-2
Jingsj CID
J-1513634-3
Molecular Formula
C5H9Br
Chinese Name
1-溴-2-戊烯
Molecular Weight
149.02900 g/mol
Category
Aliphatic Hydrocarbons
Last updated
8/21/2026

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Physicochemical Properties

Melting Point-106.7°C (estimate)
Boiling Point122ºC(lit.)
Density1.26 g/mL at 25ºC(lit.)
Flash Point73 °F

GHS Safety & Compliance

Flammable / CorrosionSignal word: Danger

Frequently Asked Questions

What is the CAS number of 1-Bromo-2-pentene, predominantly trans?

The CAS number of 1-Bromo-2-pentene, predominantly trans is 7348-71-2.

What are the molecular formula and molecular weight of 1-Bromo-2-pentene, predominantly trans?

1-Bromo-2-pentene, predominantly trans has molecular formula C5H9Br and molecular weight 149.02900 g/mol.

Is 1-Bromo-2-pentene, predominantly trans hazardous?

1-Bromo-2-pentene, predominantly trans has GHS signal word Danger.

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

Last updated:

How to cite: Jingsj. "1-Bromo-2-pentene, predominantly trans (CAS 7348-71-2)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1513634-3 (accessed 2026-10-24).

Data for reference only; verify specifications, grades and regulatory status with suppliers before purchase.