(E)-2-Butenoic acid
Also known as: Crotonic acid, trans-2-Butenoic acid, 3-Methylacrylic acid, beta-Methylacrylic acid, Ethylideneacetic acid, 2-Butenoic acid, But-2-enoic acid, 1-Propene-1-carboxylic acid
(E)-2-Butenoic acid (CAS 3724-65-0) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C4H6O2 and a molecular weight of 86.089 g/mol. Key properties include a melting point of 70-72 °C(lit.), a boiling point of 177.0±9.0 °C at 760 mmHg, a density of 1.0±0.1 g/cm3 and a flash point of 87.8±0.0 °C. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 3724-65-0
- Jingsj CID
- J-44971-8
- Molecular Formula
- C4H6O2
- Molecular Weight
- 86.089 g/mol
- Category
- Organic Acids
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Melting Point | 70-72 °C(lit.) |
|---|---|
| Boiling Point | 177.0±9.0 °C at 760 mmHg |
| Density | 1.0±0.1 g/cm3 |
| Flash Point | 87.8±0.0 °C |
| Exact Mass | 86.036781 |
| PSA | 37.30000 |
| LogP | 0.80 |
| Additional Property | 2.97 (vs air) |
| Vapor Pressure | 0.5±0.7 mmHg at 25°C |
| Refractive Index | 1.449 |
| Additional Property | soluble |
Customs & Trade Information
| HS Code | 2916190090 |
|---|---|
| Summary | 2916190090 unsaturated acyclic monocarboxylic acids, their anhydrides, halides, peroxides, peroxyacids and their derivatives。supervision conditions:AB(certificate of inspection for goods inward,certificate of inspection for goods outward)。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)-2-Butenoic acid?
The CAS number of (E)-2-Butenoic acid is 3724-65-0.
What are the molecular formula and molecular weight of (E)-2-Butenoic acid?
(E)-2-Butenoic acid has molecular formula C4H6O2 and molecular weight 86.089 g/mol.
What are the upstream and downstream products of (E)-2-Butenoic acid?
For (E)-2-Butenoic acid, Upstream Products: Crotyl alcohol, Crotononitrile, 2,3-dibromobutyric acid; Downstream Products: 2,3-dibromobutyric acid, TRANS-2-HEPTENE, Carbon dioxide.
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)-2-Butenoic acid (CAS 3724-65-0)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-44971-8 (accessed 2026-11-09).
Data for reference only; verify product details with suppliers before purchase.