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3-ETHYL-4-METHYL-2-PENTENE

3-乙基-4-甲基-2-戊烯

Also known as: (2E)-3-Ethyl-4-methyl-2-pentene, 2-Methyl-3-ethyl-3-pentene, 2-Pentene, 3-ethyl-4-methyl-, 2-Pentene,3-ethyl-4-methyl, 3-ethyl-4-methylpent-2-ene

3-ETHYL-4-METHYL-2-PENTENE (CAS 19780-68-8) is a compound in the Aliphatic Hydrocarbons category listed in the Jingsj chemical database. It has the molecular formula C8H16 and a molecular weight of 112.21300 g/mol. It is also known as (2E)-3-Ethyl-4-methyl-2-pentene, 2-Methyl-3-ethyl-3-pentene and 2-Pentene, 3-ethyl-4-methyl-. Key properties include a boiling point of 114.3ºC at 760mmHg, a density of 0.726g/cm3 and a flash point of 6.1ºC. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
19780-68-8
Jingsj CID
J-1360289-9
Molecular Formula
C8H16
Chinese Name
3-乙基-4-甲基-2-戊烯
Molecular Weight
112.21300 g/mol
Category
Aliphatic Hydrocarbons
Last updated
8/21/2026

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Physicochemical Properties

Boiling Point114.3ºC at 760mmHg
Density0.726g/cm3
Flash Point6.1ºC

Frequently Asked Questions

What is the CAS number of 3-ETHYL-4-METHYL-2-PENTENE?

The CAS number of 3-ETHYL-4-METHYL-2-PENTENE is 19780-68-8.

What are the molecular formula and molecular weight of 3-ETHYL-4-METHYL-2-PENTENE?

3-ETHYL-4-METHYL-2-PENTENE has molecular formula C8H16 and molecular weight 112.21300 g/mol.

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

Last updated:

How to cite: Jingsj. "3-ETHYL-4-METHYL-2-PENTENE (CAS 19780-68-8)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1360289-9 (accessed 2026-10-25).

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