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360473

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:
741880
EC Number:
MDL number:
UNSPSC Code:
12352115
PubChem Substance ID:
NACRES:
NA.21
grade:
ACS reagent
bp:
80 °C (lit.)
vapor pressure:
71 mmHg ( 20 °C)

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

evapn. residue

≤0.0025%

color

APHA: ≤15

refractive index

n20/D 1.379 (lit.)

bp

80 °C (lit.)

mp

−87 °C (lit.)

density

0.805 g/mL at 25 °C (lit.)

SMILES string

CC(CC)=O

InChI

1S/C4H8O/c1-3-4(2)5/h3H2,1-2H3

InChI key

ZWEHNKRNPOVVGH-UHFFFAOYSA-N

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General description

2-Butanone is an organic compound that can be used in the chemical industry as an oxidative reaction activator, extractive agent, solvent, and chemical intermediate. It can be produced by the catalytic dehydrogenation of 2-butanol.

Application

2-Butanonecan be used as a solvent:
  • To synthesize waterborne polyurethanes by reacting polyols and diisocyanates via polymerization reaction.
  • In the Al-catalyzed chemoselective coupling of oxetanes and carbon dioxide to synthesize six-membered cyclic carbonates.

Features and Benefits

  • Low-boiling solvent
  • High power of dissolution
  • High ratio of dissolved matter to viscosity
  • Miscible with a wide range of hydrocarbonswithout affecting the solid′s content or viscosity
  • Favorable volume/mass ratio due to its low density
  • Fast evaporation rate

Pictograms

FlameExclamation mark

Signal Word

Danger

Hazard Statements

Hazard Classifications

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

Target Organs

Central nervous system

Supplementary Hazards

Storage Class Code

3 - Flammable liquids

WGK

WGK 1

Flash Point(F)

30.2 °F - closed cup

Flash Point(C)

-1 °C - closed cup


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