4,4-Dimethyl-1,3-oxazolidin-2-one

Also known as: 4,4-Dimethyloxazolidin-2-one, 4,4-Dimethyl-2-oxazolidinone, 2-Oxazolidinone, 4,4-dimethyl-, 4,4-Dimethyl-oxazolidin-2-one, NSC 48911

4,4-Dimethyl-1,3-oxazolidin-2-one (CAS 26654-39-7) is a compound in the Ketones category listed in the Jingsj chemical database. It has the molecular formula C5H9NO2 and a molecular weight of 115.131 g/mol. Key properties include a boiling point of 272.2±7.0 °C at 760 mmHg, a density of 1.0±0.1 g/cm3 and a flash point of 118.4±18.2 °C. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.: 26654-39-7
Jingsj CID: J-27420-4
Molecular Formula: C₅H₉NO₂
Molecular Weight: 115.131 g/mol
Category: Ketones
Last updated: 8/21/2026

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Physicochemical Properties

Boiling Point	272.2±7.0 °C at 760 mmHg
Density	1.0±0.1 g/cm3
Flash Point	118.4±18.2 °C
Exact Mass	115.063332
PSA	38.33000
LogP	0.70
Vapor Pressure	0.0±0.6 mmHg at 25°C
Refractive Index	1.424
Storage Conditions	2-8°C

Customs & Trade Information

HS Code	2934999090
Summary	2934999090. other heterocyclic compounds. VAT:17.0%. Tax rebate rate:13.0%. . MFN tariff:6.5%. General tariff:20.0%

Frequently Asked Questions

What is the CAS number of 4,4-Dimethyl-1,3-oxazolidin-2-one?

The CAS number of 4,4-Dimethyl-1,3-oxazolidin-2-one is 26654-39-7.

What are the molecular formula and molecular weight of 4,4-Dimethyl-1,3-oxazolidin-2-one?

4,4-Dimethyl-1,3-oxazolidin-2-one has molecular formula C5H9NO2 and molecular weight 115.131 g/mol.

What are the upstream and downstream products of 4,4-Dimethyl-1,3-oxazolidin-2-one?

For 4,4-Dimethyl-1,3-oxazolidin-2-one, Upstream Products: 2-Amino-2-methyl-1-propanol, Diethyl carbonate, 4,4-Dimethyloxazolidine-2-thione; Downstream Products: 3-Bromo-4,4-dimethyl-2-oxazolidinone.

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. "4,4-Dimethyl-1,3-oxazolidin-2-one (CAS 26654-39-7)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-27420-4 (accessed 2026-11-09).

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