3,4-Dichlorocinnamic acid
Also known as: (E)-3-(3,4-dichlorophenyl)acrylic acid, 3-(3,4-Dichlorophenyl)acrylic acid, 3,4-Dichlorobenzeneacrylic acid, 3,4-Dichlorocinnamic acid, predomin antly trans, NSC 518800, MFCD00004385, OTAVA-BB BB7020400357, RARECHEM BK HC T316, Cinnamic acid, 3,4-dichloro-
3,4-Dichlorocinnamic acid (CAS 1202-39-7) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C9H6Cl2O2 and a molecular weight of 217.049 g/mol. Key properties include a melting point of 218-220 °C(lit.), a boiling point of 366.6±32.0 °C at 760 mmHg, a density of 1.5±0.1 g/cm3 and a flash point of 175.5±25.1 °C. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 1202-39-7
- Jingsj CID
- J-31378-0
- Molecular Formula
- C9H6Cl2O2
- Molecular Weight
- 217.049 g/mol
- Category
- Organic Acids
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Melting Point | 218-220 °C(lit.) |
|---|---|
| Boiling Point | 366.6±32.0 °C at 760 mmHg |
| Density | 1.5±0.1 g/cm3 |
| Flash Point | 175.5±25.1 °C |
| Exact Mass | 215.974487 |
| PSA | 37.30000 |
| LogP | 3.42 |
| Vapor Pressure | 0.0±0.9 mmHg at 25°C |
| Refractive Index | 1.638 |
Customs & Trade Information
| HS Code | 2916399090 |
|---|---|
| Summary | 2916399090 other aromatic monocarboxylic acids, their anhydrides, halides, peroxides, peroxyacids and their derivatives 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 3,4-Dichlorocinnamic acid?
The CAS number of 3,4-Dichlorocinnamic acid is 1202-39-7.
What are the molecular formula and molecular weight of 3,4-Dichlorocinnamic acid?
3,4-Dichlorocinnamic acid has molecular formula C9H6Cl2O2 and molecular weight 217.049 g/mol.
What are the upstream and downstream products of 3,4-Dichlorocinnamic acid?
For 3,4-Dichlorocinnamic acid, Upstream Products: Malonic acid, 3,4-Dichlorobenzaldehyde; Downstream Products: 3-(3,4-Dichlorophenyl)propanoic acid, 1,2-dichloro-4-(2-isocyanatoethyl)benzene.
Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "3,4-Dichlorocinnamic acid (CAS 1202-39-7)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-31378-0 (accessed 2026-11-09).
Data for reference only; verify product details with suppliers before purchase.