Diacetyl monoxime

二乙酰一肟

Also known as: 2,3-Butanedione monoxime, 2,3-Butanedione 2-oxime, 2,3-Butanedione, monooxime, (2E)-, 2-Oximino-3-butanone, 3-Oximino-2-butanone, (2E)-butane-2,3-dione oxime, (3E)-3-(hydroxyimino)-2-butanone, (3E)-3-(hydroxyimino)butan-2-one, Biacetyl monoxime, Diacetylmonoxime, Isonitrosoethyl methyl ketone, Methyl iso-nitroethyl ketone, iso-Nitroethylmethyl ketone, iso-Nitromethylethyl ketone, NSC 116103, MFCD00002116, EINECS 200-348-5

Diacetyl monoxime (CAS 57-71-6) is a compound in the Organic Compounds category listed in the Jingsj chemical database. It has the molecular formula C4H7NO2 and a molecular weight of 101.104 g/mol. It is also known as 2,3-Butanedione monoxime, 2,3-Butanedione 2-oxime and 2,3-Butanedione, monooxime, (2E)-. Key properties include a melting point of 75-78 °C(lit.), a boiling point of 185.5±9.0 °C at 760 mmHg, a density of 1.1±0.1 g/cm3 and a flash point of 66.0±18.7 °C. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
57-71-6
Jingsj CID
J-1104879-0
Molecular Formula
C4H7NO2
Chinese Name
二乙酰一肟
Molecular Weight
101.104 g/mol
Category
Organic Compounds
Last updated
8/21/2026

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Physicochemical Properties

Melting Point75-78 °C(lit.)
Boiling Point185.5±9.0 °C at 760 mmHg
Density1.1±0.1 g/cm3
Flash Point66.0±18.7 °C

Frequently Asked Questions

What is the CAS number of Diacetyl monoxime?

The CAS number of Diacetyl monoxime is 57-71-6.

What are the molecular formula and molecular weight of Diacetyl monoxime?

Diacetyl monoxime has molecular formula C4H7NO2 and molecular weight 101.104 g/mol.

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

Last updated:

How to cite: Jingsj. "Diacetyl monoxime (CAS 57-71-6)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1104879-0 (accessed 2026-10-24).

Data for reference only; verify specifications, grades and regulatory status with suppliers before purchase.