(E)-Ethyl 4-oxobut-2-enoate
Also known as: Ethyl trans-4-oxo-2-butenoate, Ethyl (2E)-4-oxobut-2-enoate, Ethyl 3-formylacrylate, Ethyl fumaraldehydate, trans-4-Oxo-2-butenoic acid ethyl ester, Ethyl trans-4-oxy-2-butenoate, 4-oxobut-2-enoic acid ethyl ester, 4-oxocrotonic acid ethyl ester
(E)-Ethyl 4-oxobut-2-enoate (CAS 2960-66-9) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C6H8O3 and a molecular weight of 128.126 g/mol. Key properties include a melting point of -9ºC, a boiling point of 199.3±23.0 °C at 760 mmHg, a density of 1.0±0.1 g/cm3 and a flash point of 78.6±22.7 °C. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 2960-66-9
- Jingsj CID
- J-34270-1
- Molecular Formula
- C6H8O3
- Molecular Weight
- 128.126 g/mol
- Category
- Organic Acids
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Melting Point | -9ºC |
|---|---|
| Boiling Point | 199.3±23.0 °C at 760 mmHg |
| Density | 1.0±0.1 g/cm3 |
| Flash Point | 78.6±22.7 °C |
| Exact Mass | 128.047348 |
| PSA | 43.37000 |
| LogP | 0.00 |
| Vapor Pressure | 0.3±0.4 mmHg at 25°C |
| Refractive Index | 1.436 |
Customs & Trade Information
| HS Code | 2918300090 |
|---|---|
| Summary | 2918300090 other carboxylic acids with aldehyde or ketone function but without other oxygen function, their anhydrides, halides, peroxides, peroxyacids and their derivatives。Supervision conditions:None。VAT:17.0%。Tax rebate rate:9.0%。MFN tariff:6.5%。General tariff:30.0% |
Frequently Asked Questions
What is the CAS number of (E)-Ethyl 4-oxobut-2-enoate?
The CAS number of (E)-Ethyl 4-oxobut-2-enoate is 2960-66-9.
What are the molecular formula and molecular weight of (E)-Ethyl 4-oxobut-2-enoate?
(E)-Ethyl 4-oxobut-2-enoate has molecular formula C6H8O3 and molecular weight 128.126 g/mol.
What are the upstream and downstream products of (E)-Ethyl 4-oxobut-2-enoate?
For (E)-Ethyl 4-oxobut-2-enoate, Upstream Products: Ethyl sorbate, Ethyl crotonate, Ethyl 2-butenoate; Downstream Products: Ethyl isoxazole-3-carboxylate, Ethyl 1H-pyrazole-3-carboxylate, Ethyl (2E,4Z)-2,4-decadienoate.
Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "(E)-Ethyl 4-oxobut-2-enoate (CAS 2960-66-9)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-34270-1 (accessed 2026-11-09).
Data for reference only; verify product details with suppliers before purchase.