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Merck
CN

M2886

Sigma-Aldrich

2-Butanone

≥99.5%

Synonym(s):

Ethyl methyl ketone, MEK, Methyl ethyl ketone

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About This Item

Linear Formula:
C2H5COCH3
CAS Number:
78-93-3
Molecular Weight:
72.11
Beilstein:
741880
EC Number:
201-159-0
MDL number:
MFCD00011648
UNSPSC Code:
12352103

Key Documents

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vapor density

2.49 (vs air)

vapor pressure

71 mmHg ( 20 °C)

Assay

≥99.5%

autoignition temp.

960 °F

expl. lim.

10.1 %

refractive index

n20/D 1.379 (lit.)

bp

80 °C (lit.)

mp

−87 °C (lit.)

density

0.805 g/mL at 25 °C (lit.)
0.81 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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Pictograms

FlameExclamation mark
GHS02,GHS07

Signal Word

Danger

Hazard Statements

H225,H319,H336

Hazard Classifications

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

Target Organs

Central nervous system

Supplementary Hazards

EUH066

Storage Class Code

3 - Flammable liquids

WGK

WGK 1

Flash Point(F)

30.2 °F - closed cup

Flash Point(C)

-1 °C - closed cup

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

Regulatory Information

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Certificates of Analysis (COA)

Lot/Batch Number
105F34981
083H0809
081K1277
069H0621
052K1262

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Shane Avison et al.
Journal of agricultural and food chemistry, 63(28), 6313-6318 (2015-06-23)
A new methodology is presented to measure water-air partition coefficients (Henry's constants) of volatiles, using APCI-MS. Significant advantages over other Henry's constant determination methods include the short measurement and sample preparation time and the possibility for simultaneous measurement of multiple

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