2-Ethylbutanoic acid

2-乙基丁酸

Also known as: 2-Ethylbutyric acid, Diethylacetic acid, 3-Pentanecarboxylic acid, 2-Ethyl-n-butyric acid, FEMA 2429, MFCD00002670, EINECS 201-796-4

2-Ethylbutanoic acid (CAS 88-09-5) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C6H12O2 and a molecular weight of 116.158 g/mol. It is also known as 2-Ethylbutyric acid, Diethylacetic acid and 3-Pentanecarboxylic acid. Key properties include a melting point of -14 °C, a boiling point of 195.4±8.0 °C at 760 mmHg, a density of 0.9±0.1 g/cm3 and a flash point of 87.8±0.0 °C. GHS signal word: Warning. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
88-09-5
Jingsj CID
J-32374-9
Molecular Formula
C6H12O2
Chinese Name
2-乙基丁酸
Molecular Weight
116.158 g/mol
Category
Organic Acids
Last updated
8/21/2026

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Physicochemical Properties

Melting Point-14 °C
Boiling Point195.4±8.0 °C at 760 mmHg
Density0.9±0.1 g/cm3
Flash Point87.8±0.0 °C

GHS Safety & Compliance

IrritantSignal word: Warning

Frequently Asked Questions

What is the CAS number of 2-Ethylbutanoic acid?

The CAS number of 2-Ethylbutanoic acid is 88-09-5.

What are the molecular formula and molecular weight of 2-Ethylbutanoic acid?

2-Ethylbutanoic acid has molecular formula C6H12O2 and molecular weight 116.158 g/mol.

Is 2-Ethylbutanoic acid hazardous?

2-Ethylbutanoic acid 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. "2-Ethylbutanoic acid (CAS 88-09-5)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-32374-9 (accessed 2026-10-22).

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