332828

Sigma-Aldrich

2-Butanone oxime

99%

Synonym(s):
Methyl ethyl ketoxime
Linear Formula:
C2H5C(=NOH)CH3
CAS Number:
Molecular Weight:
87.12
Beilstein/REAXYS Number:
1698241
EC Number:
MDL number:
PubChem Substance ID:
NACRES:
NA.22
Pricing and availability is not currently available.

Quality Level

vapor density

3 (vs air)

vapor pressure

<8 mmHg ( 20 °C)

assay

99%

refractive index

n20/D 1.442 (lit.)

bp

59-60 °C/15 mmHg (lit.)

solubility

water: soluble 100 g/L at 25 °C

density

0.924 g/mL at 25 °C (lit.)

SMILES string

CC\C(C)=N\O

InChI

1S/C4H9NO/c1-3-4(2)5-6/h6H,3H2,1-2H3/b5-4+

InChI key

WHIVNJATOVLWBW-SNAWJCMRSA-N

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Related Categories

Application

2-Butanone oxime was employed as reagent and solvent in the syntheses of ketoimine and 2,4-dipyridyl-1,3,5-triazapentadiene palladium(II) complexes. It was also used in the synthesis of novel acetaldiimine cobalt complex, CoI2{((CH3CH2)(CH3)C=NO)2C(CH3)2}.

Packaging

1 L in glass bottle
25 mL in glass bottle

Signal Word

Danger

Hazard Statements

Personal Protective Equipment

dust mask type N95 (US),Eyeshields,Gloves

Hazard Codes

Xn

Risk Statement

21-40-41-43

Safety Statement

13-23-26-36/37/39

RIDADR

UN 1993C 3 / PGIII

WGK Germany

WGK 1

Flash Point(F)

143.5 °F - closed cup

Flash Point(C)

61.97 °C - closed cup

L T Burka et al.
Xenobiotica; the fate of foreign compounds in biological systems, 28(10), 1005-1015 (1998-12-16)
1. The disposition of 14C-methyl ethyl ketoxime (MEKO) was determined in the male F344 rat following oral, intravenous (i.v.) and dermal administration. 2. Oral doses of 2.7, 27 and 270 mg/kg were primarily excreted as CO2 (71-49%) in decreasing percentage...
Michael J Derelanko et al.
Drug and chemical toxicology, 26(3), 147-168 (2003-09-05)
The developmental toxicity of methyl ethyl ketoxime (MEKO), an industrial antioxidant used primarily as an antiskinning agent in alkyd paint, was investigated in rats and rabbits. Following preliminary dose range finding studies, groups of 25 pregnant rats or 18 pregnant...
R W Tyl et al.
Fundamental and applied toxicology : official journal of the Society of Toxicology, 31(2), 149-161 (1996-06-01)
Methylethyl ketoxime (CAS No. 96-29-7; MEKO; 2-butanone oxime), an antioxidant agent used in paints, resins, and adhesives, was tested for reproductive toxicity in a two-generation study with CD (Sprague-Dawley) rats. Thirty-eight-week-old rats/sex/group (F0) were administered MEKO in water, by gavage...
Paul E Newton et al.
Inhalation toxicology, 14(12), 1249-1260 (2002-11-28)
Methylethylketoxime, also known as MEKO or 2-butanone oxime (CAS No. 96-29-7), is a clear, colorless to light yellow liquid at room temperature. It is an industrial antioxidant used as an antiskinning agent in alkyd paint, an industrial blocking agent for...
Michael J Derelanko et al.
Drug and chemical toxicology, 31(1), 97-114 (2007-12-29)
Acute and repeated oral and dermal rat toxicology studies of standard designs were conducted on four methyl ethyl ketoxime (MEKO) silanes and four methyl isobutyl ketoxime (MIBKO) silanes. Each compound contained either MEKO or MIBKO groups (but not both) and...

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