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trans-2,4-Dichlorocinnamic acid

Also known as: (2E)-3-(2,4-dichlorophenyl)prop-2-enoic acid, (2E)-3-(2,4-dichlorophenyl)acrylic acid, 3-(2,4-dichlorophenyl)acrylic acid, 2,4-Dichlorocinnamic acid, NSC 2076, AKOS BBS-00006981, OTAVA-BB BB7020400356, RARECHEM BK HW 0011

trans-2,4-Dichlorocinnamic acid (CAS 1201-99-6) 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 233-237ºC, a boiling point of 359.4±27.0 °C at 760 mmHg, a density of 1.5±0.1 g/cm3 and a flash point of 171.2±23.7 °C. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
1201-99-6
Jingsj CID
J-39712-6
Molecular Formula
C9H6Cl2O2
Molecular Weight
217.049 g/mol
Category
Organic Acids
Last updated
8/21/2026

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Physicochemical Properties

Melting Point233-237ºC
Boiling Point359.4±27.0 °C at 760 mmHg
Density1.5±0.1 g/cm3
Flash Point171.2±23.7 °C
Exact Mass215.974487
PSA37.30000
LogP3.33
Vapor Pressure0.0±0.8 mmHg at 25°C
Refractive Index1.638

Frequently Asked Questions

What is the CAS number of trans-2,4-Dichlorocinnamic acid?

The CAS number of trans-2,4-Dichlorocinnamic acid is 1201-99-6.

What are the molecular formula and molecular weight of trans-2,4-Dichlorocinnamic acid?

trans-2,4-Dichlorocinnamic acid has molecular formula C9H6Cl2O2 and molecular weight 217.049 g/mol.

What are the upstream and downstream products of trans-2,4-Dichlorocinnamic acid?

For trans-2,4-Dichlorocinnamic acid, Upstream Products: 1,4-Dichloro-2-iodobenzene, Acrylic acid, Malonic acid; Downstream Products: 3-(2,4-Dichlorophenyl)propanoic acid, 4,6-Dichloro-2,3-dihydro-1H-inden-1-one, 3-(4-Chlorophenyl)propanoic acid.

Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.

Last updated:

How to cite: Jingsj. "trans-2,4-Dichlorocinnamic acid (CAS 1201-99-6)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-39712-6 (accessed 2026-11-09).

Data for reference only; verify product details with suppliers before purchase.