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676926

Sigma-Aldrich

2-Butanone

ACS reagent, ≥99.0%

Synonym(s):

Ethyl methyl ketone, MEK, Methyl ethyl ketone

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About This Item

Linear Formula:
C2H5COCH3
CAS Number:
Molecular Weight:
72.11
Beilstein/REAXYS Number:
741880
EC Number:
MDL number:
UNSPSC Code:
12352115
eCl@ss:
39021202
PubChem Substance ID:
NACRES:
NA.21

grade:
ACS reagent
assay:
≥99.0%
bp:
80 °C (lit.)
vapor pressure:
71 mmHg ( 20 °C)
Pricing and availability is not currently available.

grade

ACS reagent

Quality Level

vapor density

2.49 (vs air)

vapor pressure

71 mmHg ( 20 °C)

assay

≥99.0%

form

liquid

autoignition temp.

960 °F

expl. lim.

10.1 %

dilution

(for analytical testing)

impurities

≤0.0005 meq/g Titr. acid
≤0.20% water

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1 of 4

This Item
1.01544905388.16001
assay

99% dry basis (perchloric acid titration)

assay

98.5-101.0% dry basis (perchloric acid titration)

assay

-

assay

≥99% (silver nitrate titration)

Quality Level

100

Quality Level

500

Quality Level

300

Quality Level

200

form

powder

form

solid

form

-

form

solid

pH

5.7 (20 °C, 100 g/L in H2O)

pH

5.7 (20 °C, 100 g/L in H2O)

pH

-

pH

5.7 (20 °C, 100 g/L in H2O)

storage temp.

2-30°C

storage temp.

2-30°C

storage temp.

2-8°C

storage temp.

2-30°C

solubility

730 g/L

solubility

water: 730 g/L at 20 °C

solubility

-

solubility

730 g/L

General description

2-Butanone is a ketone. Physical properties of the solutions of 1-n-butyl-3-methylimidazolium tetrafluoroborate (ionic liquid) in various organic solvents (acetonitrile, dichloromethane, 2-butanone and N,N-dimethylformamide) has been studied. Viscosity and density of these mixtures were evaluated at 298.15K.[1]

Application

2-Butanone (Methyl ethyl ketone) may be employed as solvent for the methylation agent [11C]methyl trifluoromethanesulfonate ([11C]CH3OTf), during the completely automated radiosynthesis of 2-(4-N-[11C]methylaminophenyl)-6-hydroxybenzothiazole ([11C]PIB).[2] It may be used in the synthesis of nanocontainer composed of 6 bowl-shaped cavitands. In the nanocontainer, cavitands were joined by 12 -CH=N-CH2CH2-N=CH- linkers.[3]

pictograms

FlameExclamation mark

signalword

Danger

Hazard Classifications

Eye Irrit. 2 - Flam. Liq. 2 - STOT SE 3

target_organs

Central nervous system

supp_hazards

Storage Class

3 - Flammable liquids

wgk_germany

WGK 1

flash_point_f

30.2 °F - closed cup

flash_point_c

-1 °C - closed cup


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