(2E)-2,4-Pentadienoic acid
Also known as: trans-2,4-Pentadienoic acid, (2E)-2,4-Pentadienoic acid, trans-1-Carboxybutadiene, (E)-1,3-Butadiene-1-carboxylic acid, 1-carboxy butadiene, 2,4-Pentadienoic acid, (2E)-
(2E)-2,4-Pentadienoic acid (CAS 21651-12-7) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C5H6O2 and a molecular weight of 98.09990 g/mol. Key properties include a melting point of 72ºC, a boiling point of 215ºC, a density of 1.039 and a flash point of 121ºC. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 21651-12-7
- Jingsj CID
- J-1355861-7
- Molecular Formula
- C5H6O2
- Molecular Weight
- 98.09990 g/mol
- Category
- Organic Acids
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Melting Point | 72ºC |
|---|---|
| Boiling Point | 215ºC |
| Density | 1.039 |
| Flash Point | 121ºC |
| Exact Mass | 98.03680 |
| PSA | 37.30000 |
| LogP | 0.81320 |
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 (2E)-2,4-Pentadienoic acid?
The CAS number of (2E)-2,4-Pentadienoic acid is 21651-12-7.
What are the molecular formula and molecular weight of (2E)-2,4-Pentadienoic acid?
(2E)-2,4-Pentadienoic acid has molecular formula C5H6O2 and molecular weight 98.09990 g/mol.
What are the upstream and downstream products of (2E)-2,4-Pentadienoic acid?
For (2E)-2,4-Pentadienoic acid, Upstream Products: Malonic acid, Acrolein, (E)-3-iodoacrylic acid; Downstream Products: 1,3-Cyclohexanedicarboxylic acid, trans-1,2-Cyclohexanedicarboxylic acid, Piperlongumine.
Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "(2E)-2,4-Pentadienoic acid (CAS 21651-12-7)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1355861-7 (accessed 2026-11-09).
Data for reference only; verify product details with suppliers before purchase.