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537713

4-Methyl-2-pentanone

Name: 4-Methyl-2-pentanone
Brand: SIGALD

≥99%

Synonym(s):

Isobutyl methyl ketone, Isopropylacetone, MIBK, Methyl isobutyl ketone

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About This Item

Linear Formula:

(CH₃)₂CHCH₂COCH₃

CAS Number:

108-10-1

Molecular Weight:

100.16

UNSPSC Code:

12352115

NACRES:

NA.21

PubChem Substance ID:

329757992

EC Number:

203-550-1

Beilstein/REAXYS Number:

605399

MDL number:

MFCD00008938

Assay:

≥99%

Bp:

117-118 °C

Vapor pressure:

15.7 mmHg

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Properties

vapor density

3.5 (vs air)

Quality Level

100

vapor pressure

15.7 mmHg

assay

≥99%

autoignition temp.

840 °F

expl. lim.

1.2-8 %, 93 °F

impurities

≤0.1000% (water)

refractive index

n20/D 1.395 (lit.)

bp

117-118 °C

mp

−80 °C (lit.)

solubility

water: soluble 20 g/L

density

0.801 g/mL at 25 °C (lit.)

SMILES string

CC(C)CC(C)=O

InChI

1S/C6H12O/c1-5(2)4-6(3)7/h5H,4H2,1-3H3

InChI key

NTIZESTWPVYFNL-UHFFFAOYSA-N

Description

General description

4-Methyl-2-pentanone (Methyl isobutyl ketone, MIBK), an aliphatic ketone, is commonly used as an organic solvent. It is generally used as an extractant in atomic absorption spectrometry. Preparation of MIBK using 2-propanol as the precursor has been reported with yield as high as 25%. The rate constant for the reaction between OH radical and MIBK was found to be 1.40 ± 0.07×10¹¹cm³molecule^-1s^-1. The kinetics and mechanism of photochemical reaction of MIBK in n-hexane solution has been studied. The microwave spectrum of MIBK has been recorded to obtain its rotational constants and centrifugal distortion constants.

Application

4-Methyl-2-pentanone may be used to prepare (R)-(-)-4-methyl-2-pentanol via asymmetric hydrogenation in the presence of silica-supported starch-polysulfosiloxane-platinum complex (SiO₂-ST-Si-S-Pt).