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Cyclopentanone oxime

Also known as: Cyclopentan-1-one oxime, N-Hydroxycyclopentan-1-imine, N-cyclopentylidenehydroxylamine, NSC 3164, Cyclopentanone, oxime, hydroxyiminocyclopentane

Cyclopentanone oxime (CAS 1192-28-5) is a compound in the Ketones category listed in the Jingsj chemical database. It has the molecular formula C5H9NO and a molecular weight of 99.131 g/mol. Key properties include a melting point of 53-55 °C(lit.), a boiling point of 196.0±0.0 °C at 760 mmHg, a density of 1.2±0.1 g/cm3 and a flash point of 92.2±0.0 °C. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
1192-28-5
Jingsj CID
J-1306817-2
Molecular Formula
C5H9NO
Molecular Weight
99.131 g/mol
Category
Ketones
Last updated
8/21/2026

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Physicochemical Properties

Melting Point53-55 °C(lit.)
Boiling Point196.0±0.0 °C at 760 mmHg
Density1.2±0.1 g/cm3
Flash Point92.2±0.0 °C
Exact Mass99.068413
PSA32.59000
LogP0.56
Vapor Pressure0.2±0.7 mmHg at 25°C
Refractive Index1.539

Customs & Trade Information

HS Code2928000090
Summary2928000090 other organic derivatives of hydrazine or of hydroxylamine VAT:17.0% Tax rebate rate:9.0% Supervision conditions:none MFN tariff:6.5% General tariff:20.0%

Frequently Asked Questions

What is the CAS number of Cyclopentanone oxime?

The CAS number of Cyclopentanone oxime is 1192-28-5.

What are the molecular formula and molecular weight of Cyclopentanone oxime?

Cyclopentanone oxime has molecular formula C5H9NO and molecular weight 99.131 g/mol.

What are the upstream and downstream products of Cyclopentanone oxime?

For Cyclopentanone oxime, Upstream Products: Cyclopentylamine, Cyclopentanone, nitrocyclopentane; Downstream Products: Cyclopentylamine, 2-Piperidone, Cyclopentanone.

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

Last updated:

How to cite: Jingsj. "Cyclopentanone oxime (CAS 1192-28-5)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1306817-2 (accessed 2026-11-09).

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