4-Cyanocinnamic acid
Also known as: 3-(4-Cyanophenyl)acrylic acid, (2E)-3-(4-cyanophenyl)prop-2-enoic acid, (E)-3-(4-cyanophenyl)acrylic acid, p-cyanocinnamic acid, trans-4-cyanocinnamic acid, trans-p-cyanocinnamic acid, 3-(4-Cyanophenyl)propenoic acid, cyanocinnamicacid, EINECS 242-484-8, MFCD00016845, RARECHEM BK HD C008, AKOS BAR-2475, 2-Propenoic acid, 3-(4-cyanophenyl)-
4-Cyanocinnamic acid (CAS 18664-39-6) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C10H7NO2 and a molecular weight of 173.168 g/mol. Key properties include a melting point of 245-248°C, a boiling point of 380.4±25.0 °C at 760 mmHg, a density of 1.3±0.1 g/cm3 and a flash point of 183.9±23.2 °C. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 18664-39-6
- Jingsj CID
- J-1117539-6
- Molecular Formula
- C10H7NO2
- Molecular Weight
- 173.168 g/mol
- Category
- Organic Acids
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Melting Point | 245-248°C |
|---|---|
| Boiling Point | 380.4±25.0 °C at 760 mmHg |
| Density | 1.3±0.1 g/cm3 |
| Flash Point | 183.9±23.2 °C |
| Exact Mass | 173.047684 |
| PSA | 61.09000 |
| LogP | 1.98 |
| Vapor Pressure | 0.0±0.9 mmHg at 25°C |
| Refractive Index | 1.597 |
Customs & Trade Information
| HS Code | 2926909090 |
|---|---|
| Summary | HS:2926909090 other nitrile-function compounds VAT:17.0% Tax rebate rate:9.0% Supervision conditions:none MFN tariff:6.5% General tariff:30.0% |
Frequently Asked Questions
What is the CAS number of 4-Cyanocinnamic acid?
The CAS number of 4-Cyanocinnamic acid is 18664-39-6.
What are the molecular formula and molecular weight of 4-Cyanocinnamic acid?
4-Cyanocinnamic acid has molecular formula C10H7NO2 and molecular weight 173.168 g/mol.
What are the upstream and downstream products of 4-Cyanocinnamic acid?
For 4-Cyanocinnamic acid, Downstream Products: 3-(4-Cyanophenyl)propanoic acid, 3-(4-Carboxyphenyl)propionic acid, Methyl 4-cyanocinnamate.
Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "4-Cyanocinnamic acid (CAS 18664-39-6)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1117539-6 (accessed 2026-11-09).
Data for reference only; verify product details with suppliers before purchase.