1,2-Cyclohexanedione dioxime

Also known as: Nioxime, N,N'-Dihydroxycyclohexane-1,2-diimine, 1,2-Bis(hydroxyimino)cyclohexane, Cyclohexane-1,2-dione dioxime, NSC 4076

1,2-Cyclohexanedione dioxime (CAS 492-99-9) is a compound in the Ketones category listed in the Jingsj chemical database. It has the molecular formula C6H10N2O2 and a molecular weight of 142.156 g/mol. Key properties include a melting point of 188-190 °C (dec.), a boiling point of 339.0±25.0 °C at 760 mmHg, a density of 1.4±0.1 g/cm3 and a flash point of 210.1±12.4 °C. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.: 492-99-9
Jingsj CID: J-26453-0
Molecular Formula: C₆H₁₀N₂O₂
Molecular Weight: 142.156 g/mol
Category: Ketones
Last updated: 8/21/2026

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Physicochemical Properties

Melting Point	188-190 °C (dec.)
Boiling Point	339.0±25.0 °C at 760 mmHg
Density	1.4±0.1 g/cm3
Flash Point	210.1±12.4 °C
Exact Mass	142.074234
PSA	65.18000
LogP	0.15
Vapor Pressure	0.0±1.7 mmHg at 25°C
Refractive Index	1.594

Customs & Trade Information

HS Code	2928000090
Summary	2928000090 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 1,2-Cyclohexanedione dioxime?

The CAS number of 1,2-Cyclohexanedione dioxime is 492-99-9.

What are the molecular formula and molecular weight of 1,2-Cyclohexanedione dioxime?

1,2-Cyclohexanedione dioxime has molecular formula C6H10N2O2 and molecular weight 142.156 g/mol.

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. "1,2-Cyclohexanedione dioxime (CAS 492-99-9)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-26453-0 (accessed 2026-11-06).

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