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Cinnamic anhydride

Also known as: 3-PHENYLACRYLIC ANHYDRIDE, 3-PHENYLPROPENOIC ANHYDRIDE, 2-Propenoic acid, 3-phenyl-, 1,1'-anhydride, 2-Propenoic acid, 3-phenyl-, anhydride, 3-phenyl-2-propenoicacid,anhydride, Cinnamic acid anhydride, CINNAMYLIC ANHYDRIDE, BENZENEPROPENOIC ANHYDRIDE, Bis(3-phenylpropenoic)anhydride, Ai3-18175, NSC 78945, EINECS 208-695-4, Zimtsaeure-anhydrid, Zimtsaeureanhydid

Cinnamic anhydride (CAS 538-56-7) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C18H14O3 and a molecular weight of 278.30200 g/mol. Key properties include a boiling point of 467.2ºC at 760 mmHg, a density of 1.195g/cm3 and a flash point of 228ºC. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
538-56-7
Jingsj CID
J-1365593-1
Molecular Formula
C18H14O3
Molecular Weight
278.30200 g/mol
Category
Organic Acids
Last updated
8/21/2026
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Physicochemical Properties

Boiling Point467.2ºC at 760 mmHg
Density1.195g/cm3
Flash Point228ºC
Exact Mass278.09400
PSA43.37000
LogP3.48300
Refractive Index1.641

Frequently Asked Questions

What is the CAS number of Cinnamic anhydride?

The CAS number of Cinnamic anhydride is 538-56-7.

What are the molecular formula and molecular weight of Cinnamic anhydride?

Cinnamic anhydride has molecular formula C18H14O3 and molecular weight 278.30200 g/mol.

What are the upstream and downstream products of Cinnamic anhydride?

For Cinnamic anhydride, Upstream Products: Cinnamoyl chloride, Cinnamic acid, Ethanol; Downstream Products: N-(4-hydroxyphenyl)cinnamamide, Cinnamamide.

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

Last updated:

How to cite: Jingsj. "Cinnamic anhydride (CAS 538-56-7)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1365593-1 (accessed 2026-11-09).

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