2,4-Pentanedione dioxime

Also known as: Acetylacetone dioxime, Diacetylmethane dioxime, 2,4-Pentanedione oxime, 2,4-Pentanedioxime, pentane-2,4-dione dioxime, (2E,4E)-2,4-Pentanedione dioxime, 2,4-pentanedionedioxime, LABOTEST-BB LT00848120, TIMTEC-BB SBB007848, MFCD00013932, EINECS 218-472-3, NSC 1843

2,4-Pentanedione dioxime (CAS 2157-56-4) is a compound in the Ketones category listed in the Jingsj chemical database. It has the molecular formula C5H10N2O2 and a molecular weight of 130.14500 g/mol. Key properties include a melting point of 144-149 °C, a boiling point of 298.8ºC at 760mmHg, a density of 1.13g/cm3 and a flash point of 179.3ºC. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.: 2157-56-4
Jingsj CID: J-23723-0
Molecular Formula: C₅H₁₀N₂O₂
Molecular Weight: 130.14500 g/mol
Category: Ketones
Last updated: 8/21/2026

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Physicochemical Properties

Melting Point	144-149 °C
Boiling Point	298.8ºC at 760mmHg
Density	1.13g/cm3
Flash Point	179.3ºC
Exact Mass	130.07400
PSA	65.18000
LogP	1.07670
Vapor Pressure	0.000294mmHg at 25°C
Refractive Index	1.486

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 2,4-Pentanedione dioxime?

The CAS number of 2,4-Pentanedione dioxime is 2157-56-4.

What are the molecular formula and molecular weight of 2,4-Pentanedione dioxime?

2,4-Pentanedione dioxime has molecular formula C5H10N2O2 and molecular weight 130.14500 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. "2,4-Pentanedione dioxime (CAS 2157-56-4)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-23723-0 (accessed 2026-11-09).

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