(2E)-2-Pentenal
反-2-戊烯醛
Also known as: trans-2-Pentenal, 2-Penten-1-al, 2-Pentenal, FEMA 3218, (E)-2-Pentenal, Pent-2-enal, gamma-Methylcrotonaldehyde
(2E)-2-Pentenal (CAS 764-39-6) is a compound in the Aliphatic Hydrocarbons category listed in the Jingsj chemical database. It has the molecular formula C5H8O and a molecular weight of 84.11640 g/mol. It is also known as trans-2-Pentenal, 2-Penten-1-al and 2-Pentenal. Key properties include a melting point of -101.15°C (estimate), a boiling point of 126.8ºC at 760 mmHg, a density of 0.824g/cm3 and a flash point of 21.9ºC. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 764-39-6
- Jingsj CID
- J-1326989-8
- Molecular Formula
- C5H8O
- Chinese Name
- 反-2-戊烯醛
- Molecular Weight
- 84.11640 g/mol
- Category
- Aliphatic Hydrocarbons
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Melting Point | -101.15°C (estimate) |
|---|---|
| Boiling Point | 126.8ºC at 760 mmHg |
| Density | 0.824g/cm3 |
| Flash Point | 21.9ºC |
Frequently Asked Questions
What is the CAS number of (2E)-2-Pentenal?
The CAS number of (2E)-2-Pentenal is 764-39-6.
What are the molecular formula and molecular weight of (2E)-2-Pentenal?
(2E)-2-Pentenal has molecular formula C5H8O and molecular weight 84.11640 g/mol.
Data compiled from public chemical databases and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "(2E)-2-Pentenal (CAS 764-39-6)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1326989-8 (accessed 2026-10-25).
Data for reference only; verify specifications, grades and regulatory status with suppliers before purchase.