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3-METHYL-4-OCTANONE

Also known as: 3-methyloctan-4-one, 3-methyl-octan-4-one, 4-Octanone, 3-methyl-, Butyl sec-butyl ketone, Butyl-sek.-butyl-keton, 3-Methyl-octan-4-on

3-METHYL-4-OCTANONE (CAS 20754-04-5) 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. 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.
20754-04-5
Jingsj CID
J-1360228-3
Molecular Formula
C9H18O
Molecular Weight
142.23900 g/mol
Category
Ketones
Last updated
8/21/2026
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Physicochemical Properties

Boiling Point180ºC at 760mmHg
Density0.814g/cm3
Flash Point57.6ºC
Exact Mass142.13600
PSA17.07000
LogP2.79180
Vapor Pressure1.23mmHg at 25°C
Refractive Index1.415

Customs & Trade Information

HS Code2914190090
Summary2914190090 other acyclic ketones without other oxygen function。Supervision conditions:None。VAT:17.0%。Tax rebate rate:9.0%。MFN tariff:5.5%。General tariff:30.0%

Frequently Asked Questions

What is the CAS number of 3-METHYL-4-OCTANONE?

The CAS number of 3-METHYL-4-OCTANONE is 20754-04-5.

What are the molecular formula and molecular weight of 3-METHYL-4-OCTANONE?

3-METHYL-4-OCTANONE has molecular formula C9H18O and molecular weight 142.23900 g/mol.

What are the upstream and downstream products of 3-METHYL-4-OCTANONE?

For 3-METHYL-4-OCTANONE, Upstream Products: Butylmagnesium bromide, 2-Methylbutanoic acid, 2-Methylbutanoyl chloride.

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

Last updated:

How to cite: Jingsj. "3-METHYL-4-OCTANONE (CAS 20754-04-5)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1360228-3 (accessed 2026-11-09).

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