5-Methyl-2-octanone

5-甲基-2-辛酮

Also known as: 2-Octanone, 5-methyl-, 5-METHYL-2-OCTANONE, 5-METHYL-2-OCTANONE: TECH., 75%, CONT. 5-NONANONE CA 10%, 5-methyl-2-octanon, 5-methyl-2-octanone, tech., 5-methyloctan-2-one, EINECS 261-382-4, METHYL 3-METHYLHEXYL KETONE, methyloctanone

5-Methyl-2-octanone (CAS 58654-67-4) is a compound in the Ketones category listed in the Jingsj chemical database. It has the molecular formula C9H18O and a molecular weight of 142.23900 g/mol. It is also known as 2-Octanone, 5-methyl-, 5-METHYL-2-OCTANONE and 5-METHYL-2-OCTANONE: TECH., 75%, CONT. 5-NONANONE CA 10%. Key properties include a boiling point of 180ºC at 760mmHg, a density of 0.814g/cm3 and a flash point of 57.6ºC. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.: 58654-67-4
Jingsj CID: J-23706-8
Molecular Formula: C₉H₁₈O
Chinese Name: 5-甲基-2-辛酮
Molecular Weight: 142.23900 g/mol
Category: Ketones
Last updated: 8/21/2026

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Physicochemical Properties

Boiling Point	180ºC at 760mmHg
Density	0.814g/cm3
Flash Point	57.6ºC

Frequently Asked Questions

What is the CAS number of 5-Methyl-2-octanone?

The CAS number of 5-Methyl-2-octanone is 58654-67-4.

What are the molecular formula and molecular weight of 5-Methyl-2-octanone?

5-Methyl-2-octanone has molecular formula C9H18O and molecular weight 142.23900 g/mol.

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

Last updated: 8/21/2026

How to cite: Jingsj. "5-Methyl-2-octanone (CAS 58654-67-4)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-23706-8 (accessed 2026-10-23).

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