Methyl ethyl ketone

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Other names/abbreviations:

2-Butanone Ethyl methyl ketone MEK

Empirical formula:	C4H8O1
CAS-Number:	78-93-3
EINECS-Number:	201-159-0

Chemical properties

Solubility
Water: 290 g/L (20 °C)

Biological properties

Acute toxicity:

Safety

Symbol: F, Xi
R-phrases: 11-36/37
S-phrases: 9-16-25-33

Physical properties

Appearance
	Physical state @ 20°C:	Liquid [1]
	Color:	Colourless [1]
	Odor:	Of solvents [1]

Bulk properties
	Molecular weight (g/mol):	72.11 [1]
	Melting point (°C):	-86 [1]
	Boiling point (°C):	79 [1]
	Ignition temperature (°C):	505 [1]
	Flash point (°C):	-1 [1]
	Explosion limits (vol. %):	1.8-11.5 [1]
	Density (g/cm3):	0.80 (20 °C) [1]

Electronic properties
	Dipole moment (Debye):	2.7 (20 °C) [1]
	Dielectric constant:	18.5 (20 °C) [1]

Misc.
	Vapour pressure (Pa):	10500 (20 °C) [1]

References

1: Merck. ChemDAT The Merck Chemical Database Ver. 1.1.5

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© Michael Pilgaard
Created: November 5, 2008