2-Undecanone

Also known as: Methyl nonyl ketone, Methyl n-nonyl ketone, undecan-2-one, nonyl methyl ketone, 2-Oxoundecane

2-Undecanone (CAS 112-12-9) is a compound in the Ketones category listed in the Jingsj chemical database. It has the molecular formula C11H22O and a molecular weight of 170.292 g/mol. Key properties include a melting point of 11-13 °C(lit.), a boiling point of 230.8±3.0 °C at 760 mmHg, a density of 0.8±0.1 g/cm3 and a flash point of 88.9±0.0 °C. It is classified under GHS with signal word Warning and hazard statements H410 — Very toxic to aquatic life with long lasting effects. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.: 112-12-9
Jingsj CID: J-44438-3
Molecular Formula: C₁₁H₂₂O
Molecular Weight: 170.292 g/mol
Category: Ketones
Last updated: 8/21/2026

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Physicochemical Properties

Melting Point	11-13 °C(lit.)
Boiling Point	230.8±3.0 °C at 760 mmHg
Density	0.8±0.1 g/cm3
Flash Point	88.9±0.0 °C
Exact Mass	170.167068
PSA	17.07000
LogP	4.09
Additional Property	5.9 (vs air)
Vapor Pressure	0.1±0.4 mmHg at 25°C
Refractive Index	1.425
Additional Property	INSOLUBLE

GHS Safety & Compliance

Environmental HazardSignal word: Warning

H410 — Very toxic to aquatic life with long lasting effects

Activity & Biological Data

Additional Information	[1]. Melkina OE, et al. Ketones 2-heptanone, 2-nonanone, and 2-undecanone inhibit DnaK-dependent refolding of heat-inactivated bacterial luciferases in Escherichia coli cells lacking small chaperon IbpB. Appl Microbiol Biotechnol. 2017 Jul;101(14):5765-5771. [2]. Lou Y, et al. Houttuynia cordata Thunb. and its bioactive compound 2-undecanone significantly suppress benzo(a)pyrene-induced lung tumorigenesis by activating the Nrf2-HO-1/NQO-1 signaling pathway. J Exp Clin Cancer Res. 2019 Jun 7;38(1):242.

Additional Information

[1]. Melkina OE, et al. Ketones 2-heptanone, 2-nonanone, and 2-undecanone inhibit DnaK-dependent refolding of heat-inactivated bacterial luciferases in Escherichia coli cells lacking small chaperon IbpB. Appl Microbiol Biotechnol. 2017 Jul;101(14):5765-5771. [2]. Lou Y, et al. Houttuynia cordata Thunb. and its bioactive compound 2-undecanone significantly suppress benzo(a)pyrene-induced lung tumorigenesis by activating the Nrf2-HO-1/NQO-1 signaling pathway. J Exp Clin Cancer Res. 2019 Jun 7;38(1):242.

Customs & Trade Information

HS Code	2914190090
Summary	2914190090 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 2-Undecanone?

The CAS number of 2-Undecanone is 112-12-9.

What are the molecular formula and molecular weight of 2-Undecanone?

2-Undecanone has molecular formula C11H22O and molecular weight 170.292 g/mol.

Is 2-Undecanone hazardous?

2-Undecanone has GHS signal word Warning and hazard statements H410 — Very toxic to aquatic life with long lasting effects.

What are the upstream and downstream products of 2-Undecanone?

For 2-Undecanone, Upstream Products: 1-Undecene, 2-Undecanol, Ethyl 2-acetyldecanoate; Downstream Products: 2-Methyl-1-undecanol, Undecane, 1-(undecyloxy)-, 10-Nonadecanone.

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

Last updated: 8/21/2026

How to cite: Jingsj. "2-Undecanone (CAS 112-12-9)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-44438-3 (accessed 2026-11-07).

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