Ethyl 3-methyl-2-butenoate

3-甲基-2-丁烯酸乙酯

Also known as: 3,3-dimethylacrylic acid ethyl ester, Ethyl 3,3-dimethylacrylate, 2-Butenoic acid, 3-methyl-, ethyl ester, ethyl 3-methylbut-2-enoate, EINECS 211-319-1, MFCD00009187

Ethyl 3-methyl-2-butenoate (CAS 638-10-8) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C7H12O2 and a molecular weight of 128.169 g/mol. It is also known as 3,3-dimethylacrylic acid ethyl ester, Ethyl 3,3-dimethylacrylate and 2-Butenoic acid, 3-methyl-, ethyl ester. Key properties include a boiling point of 153.5±0.0 °C at 760 mmHg, a density of 0.9±0.1 g/cm3 and a flash point of 33.9±0.0 °C. GHS signal word: Warning. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
638-10-8
Jingsj CID
J-1323779-2
Molecular Formula
C7H12O2
Chinese Name
3-甲基-2-丁烯酸乙酯
Molecular Weight
128.169 g/mol
Category
Organic Acids
Last updated
8/21/2026

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Physicochemical Properties

Boiling Point153.5±0.0 °C at 760 mmHg
Density0.9±0.1 g/cm3
Flash Point33.9±0.0 °C

GHS Safety & Compliance

FlammableSignal word: Warning

Frequently Asked Questions

What is the CAS number of Ethyl 3-methyl-2-butenoate?

The CAS number of Ethyl 3-methyl-2-butenoate is 638-10-8.

What are the molecular formula and molecular weight of Ethyl 3-methyl-2-butenoate?

Ethyl 3-methyl-2-butenoate has molecular formula C7H12O2 and molecular weight 128.169 g/mol.

Is Ethyl 3-methyl-2-butenoate hazardous?

Ethyl 3-methyl-2-butenoate has GHS signal word Warning.

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

Last updated:

How to cite: Jingsj. "Ethyl 3-methyl-2-butenoate (CAS 638-10-8)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1323779-2 (accessed 2026-10-22).

Data for reference only; verify specifications, grades and regulatory status with suppliers before purchase.