2-Methylbutanoyl chloride

2-甲基丁酰氯

Also known as: DL-2-Methylbutyryl chloride, 2-Methylbutyryl chloride, Butanoyl chloride, 2-methyl-, (RS)-2-Methylbutyryl chloride, 2-Ethylpropanoyl chloride, Ethylmethylacetylchloride

2-Methylbutanoyl chloride (CAS 57526-28-0) is a compound in the Organohalogen Compounds category listed in the Jingsj chemical database. It has the molecular formula C5H9ClO and a molecular weight of 120.57700 g/mol. It is also known as DL-2-Methylbutyryl chloride, 2-Methylbutyryl chloride and Butanoyl chloride, 2-methyl-. Key properties include a boiling point of 116-118ºC, a density of 0.98 and a flash point of 38ºC. GHS signal word: Danger. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
57526-28-0
Jingsj CID
J-874420-5
Molecular Formula
C5H9ClO
Chinese Name
2-甲基丁酰氯
Molecular Weight
120.57700 g/mol
Category
Organohalogen Compounds
Last updated
8/21/2026

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Physicochemical Properties

Boiling Point116-118ºC
Density0.98
Flash Point38ºC

GHS Safety & Compliance

Flammable / CorrosionSignal word: Danger

Frequently Asked Questions

What is the CAS number of 2-Methylbutanoyl chloride?

The CAS number of 2-Methylbutanoyl chloride is 57526-28-0.

What are the molecular formula and molecular weight of 2-Methylbutanoyl chloride?

2-Methylbutanoyl chloride has molecular formula C5H9ClO and molecular weight 120.57700 g/mol.

Is 2-Methylbutanoyl chloride hazardous?

2-Methylbutanoyl chloride has GHS signal word Danger.

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

Last updated:

How to cite: Jingsj. "2-Methylbutanoyl chloride (CAS 57526-28-0)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-874420-5 (accessed 2026-10-24).

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